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CBSE Class 10 Maths Standard 2025 Question Paper 30/1/2 with Solutions

All 44 questions from the CBSE Class 10 Mathematics Standard board paper, Set 30/1/2 (2025), with answers and step-by-step solutions. Total 80 marks. Tap “Show answer & solution” under any question.

Set 30/1/1Set 30/1/2Set 30/1/3Set 30/2/1Set 30/2/2Set 30/2/3Set 30/3/1Set 30/3/2Set 30/3/3Set 30/4/1Set 30/4/2Set 30/4/3Set 30/5/1Set 30/5/2Set 30/5/3Set 30/6/1Set 30/6/2Set 30/6/3
Q11 markMCQCircles

In the given figure, is a tangent from an external point to a circle with centre . If , then is equal to :

Diagram for CBSE 2025 Class 10 Maths question 1
  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. is a straight line (diameter), so .
  2. (radius is perpendicular to tangent), so .
  3. In : .

A piece of wire cm long is bent into the form of an arc of a circle of radius cm. The angle subtended by the arc at the centre of the circle is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (B)
  1. Arc length .
  2. .
  3. .

Three numbers in AP have the sum . What is its middle term ?

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (B)
  1. Let the numbers be , , .
  2. Sum , so .
  3. The middle term is .

An arc of a circle is of length cm and the sector it bounds has an area of cm. Its radius is :

  1. (A) cm
  2. (B) cm
  3. (C) cm
  4. (D) cm
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Answer: (D) cm
  1. Area of sector .
  2. cm.

If and is a solution of the pair of linear equations and , then :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (B)
  1. Put in : , so .
  2. Put in : , so .
  3. Hence , i.e. .
Q61 markMCQPolynomials

Two polynomials are shown in the graph below. The number of distinct zeroes of both the polynomials is :

Diagram for CBSE 2025 Class 10 Maths question 6
  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (C)
  1. Zeroes are the x-coordinates of the points where a graph meets the x-axis.
  2. Both parabolas cut the x-axis at the same two points.
  3. So the two polynomials together have distinct zeroes.

If and , then is equal to :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (B)
  1. , so and .
  2. .
Q81 markMCQProbability

A card is selected at random from a deck of 52 playing cards. The probability of it being a red face card is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. Red face cards: J, Q, K of hearts and of diamonds .
  2. .
Also asked in: 2025 Standard 30/1/1
Q91 markMCQPolynomials

If and are the zeroes of polynomial such that , then the value of is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (D)
  1. and .
  2. , so .
Also asked in: 2025 Standard 30/1/1

The value of is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (C)
  1. .
  2. .
Also asked in: 2025 Standard 30/1/1
Q111 markMCQReal Numbers

Which of the following is a rational number between and ?

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. and .
  2. (A) is non-terminating and non-repeating, so it is irrational (and less than ).
  3. (B) is rational but greater than .
  4. (C) is irrational.
  5. (D) is a terminating decimal, hence rational, and .
Q121 markMCQReal Numbers

If and , then the value of is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (C)
  1. and .
  2. .
  3. .
  4. .
Q131 markMCQCircles

If the length of a chord of a circle is equal to its radius, then the angle subtended by chord at the centre is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (A)
  1. Join the ends of the chord to the centre.
  2. The triangle formed has all three sides equal to the radius, so it is equilateral.
  3. Each angle is , so the chord subtends at the centre.
Q141 markMCQReal Numbers

The greatest number which divides and , leaving remainders and respectively, is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
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Answer: (A)
  1. The required number divides and exactly.
  2. and .
  3. .

A ladder m long leans against a wall. If the foot of the ladder is m from the wall, then the angle of elevation of the top of the wall is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. Let be the angle the ladder makes with the ground.
  2. , so .
Q161 markMCQTriangles

In triangles and , , and . Then, the two triangles are :

  1. (A)congruent but not similar
  2. (B)congruent as well as similar
  3. (C)neither congruent nor similar
  4. (D)similar but not congruent
Show answer & solution
Answer: (D) similar but not congruent
  1. and , so (AA similarity).
  2. , so the corresponding sides are not equal and the triangles are not congruent.

The mid-point of the line segment joining the points and lies on :

  1. (A)x-axis
  2. (B)y-axis
  3. (C)origin
  4. (D)neither x-axis nor y-axis
Show answer & solution
Answer: (B) y-axis
  1. Mid-point .
  2. Its x-coordinate is , so it lies on the y-axis.
Also asked in: 2025 Standard 30/1/1
Q181 markMCQStatistics

Mode and Mean of a data are and , respectively. Then the median of the data is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (C)
  1. Empirical relation: .
  2. , so .
Also asked in: 2025 Standard 30/1/1
Q191 markAssertion–ReasonSurface Areas and Volumes

Assertion (A) : If we join two hemispheres of same radius along their bases, then we get a sphere.
Reason (R) : Total Surface Area of a sphere of radius is .

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  3. (C)Assertion (A) is true, but Reason (R) is false.
  4. (D)Assertion (A) is false, but Reason (R) is true.
Show answer & solution
Answer: (C) Assertion (A) is true, but Reason (R) is false.
  1. Two hemispheres of the same radius joined along their circular bases form a complete sphere. Assertion is true.
  2. The surface area of a sphere of radius is , not ( is the total surface area of a solid hemisphere). Reason is false.
Q201 markAssertion–ReasonProbability

Assertion (A) : The probability of selecting a number at random from the numbers 1 to 20 is 1.
Reason (R) : For any event E, if P(E) = 1, then E is called a sure event.

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  3. (C)Assertion (A) is true, but Reason (R) is false.
  4. (D)Assertion (A) is false, but Reason (R) is true.
Show answer & solution
Answer: (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  1. When a number is selected from 1 to 20, it is certain that the number selected is one of the numbers 1 to 20, so this is a sure event and its probability is 1. Assertion is true.
  2. Reason states the definition of a sure event: if , E is a sure event. Reason is true.
  3. The assertion holds because the event is a sure event, so R correctly explains A.
Q212 marksVery Short AnswerPolynomials

If the zeroes of the polynomial are in the ratio , then prove that .

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Answer: Proved.
  1. Let the zeroes be and .
  2. Sum of zeroes: , so .
  3. Product of zeroes: .
  4. So , i.e. .
  5. Hence .
Q222 marksVery Short AnswerCircles

A person is standing at outside a circular ground at a distance of m from the centre of the ground. He found that his distances from the points and on the ground are m ( and are tangents to the circle). Find the radius of the circular ground.

Diagram for CBSE 2025 Class 10 Maths question 22
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Answer: m
  1. (radius is perpendicular to tangent at point of contact), so is right-angled at .
  2. .
  3. m. So the radius is m.
Q232 marksVery Short AnswerTriangles

If in which cm, cm, cm and cm, then find the length of .

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Answer: cm
  1. Since : .
  2. cm.
  3. cm.
  4. cm.
OR
Q23 (OR) (OR)2 marksVery Short AnswerTriangles

In the given figure, and , show that .

Diagram for CBSE 2025 Class 10 Maths question 23 (OR)
Show answer & solution
Answer: Proved.
  1. In , , i.e. , so (sides opposite equal angles).
  2. Given . Replace by : , so .
  3. In and : and (, common).
  4. Hence (SAS similarity).
Q242 marksVery Short AnswerIntroduction to Trigonometry

If , then find the value of .

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Answer:
  1. , , , .
  2. Multiply by 2: .
OR
Q24 (OR) (OR)2 marksVery Short AnswerIntroduction to Trigonometry

Evaluate :

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Answer:
  1. .
  2. .
  3. Value .
Q252 marksVery Short AnswerCoordinate Geometry

The coordinates of the centre of a circle are . Find the value(s) of 'a' if the circle passes through the point and has diameter units.

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Answer: or
  1. Radius , so (radius).
  2. Distance from centre to equals the radius:
  3. , i.e.
  4. , so or .
Also asked in: 2025 Standard 30/1/1
Q263 marksShort AnswerSurface Areas and Volumes

If the radii of the bases of a cylinder and a cone are in the ratio and their heights are in the ratio , find the ratio of their volumes.

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Answer:
  1. Let the radii be , and the heights , .
  2. Volume of cylinder .
  3. Volume of cone .
  4. Ratio .
Q273 marksShort AnswerReal Numbers

Three sets of Physics, Chemistry and Mathematics books have to be stacked in such a way that all the books are stored subject-wise and the height of each stack is the same. The number of Physics books is , the number of Chemistry books is and the number of Mathematics books is . Assuming that the books are of same thickness, determine the number of stacks of Physics, Chemistry and Mathematics books.

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Answer: Physics: stacks, Chemistry: stacks, Mathematics: stacks (12 books in each stack)
  1. For the least number of stacks of equal height, the number of books in each stack is the HCF of 144, 180 and 192.
  2. , , .
  3. HCF books per stack.
  4. Physics: stacks; Chemistry: stacks; Mathematics: stacks.
Q283 marksShort AnswerProbability

Two dice are thrown at the same time. Determine the probability that the difference of the numbers on the two dice is 2.

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Answer:
  1. Total outcomes .
  2. Favourable outcomes: , i.e. 8 outcomes.
  3. .
Also asked in: 2025 Standard 30/1/1
Q293 marksShort AnswerIntroduction to Trigonometry

Prove that :

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Answer: Proved.
  1. Let , so .
  2. LHS
  3. .
  4. So LHS RHS.
OR
Q29 (OR) (OR)3 marksShort AnswerIntroduction to Trigonometry

Prove that :

Show answer & solution
Answer: Proved.
  1. LHS
  2. Numerator .
  3. Denominator .
  4. LHS RHS.
Q303 marksShort AnswerCircles

In the given figure, is the centre of the circle and is tangent to it at . Prove that .

Diagram for CBSE 2025 Class 10 Maths question 30
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Answer: Proved.
  1. Join . Since is tangent at , , so .
  2. , so ... (1)
  3. In , (radii), so .
  4. are collinear, so .
  5. Substituting in (1): .
OR
Q30 (OR) (OR)3 marksShort AnswerCircles

Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.

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Answer: Proved.
  1. Let circumscribe a circle with centre , touching at . Join .
  2. In and : (tangents from ), (radii), common. So they are congruent (SSS) and .
  3. Similarly , , .
  4. The eight angles at add up to : .
  5. So , i.e. .
  6. Similarly . Hence opposite sides subtend supplementary angles at the centre.
Q313 marksShort AnswerCoordinate Geometry

Find the ratio in which the y-axis divides the line segment joining the points and . Also find the point of intersection.

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Answer: Ratio ; point of intersection
  1. Let the y-axis divide the segment in the ratio .
  2. x-coordinate of the point , so . Ratio .
  3. y-coordinate .
  4. Point of intersection .
Q325 marksLong AnswerTriangles

The diagonal of a parallelogram intersects the line segment at the point , where is any point on the side . Prove that .

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Answer: Proved.
  1. In parallelogram , , so .
  2. In and :
  3. (vertically opposite angles)
  4. (alternate angles, , transversal)
  5. So (AA similarity).
  6. Hence , which gives .
OR
Q32 (OR) (OR)5 marksLong AnswerTriangles

In , if and , then prove that .

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Answer: Proved.
  1. gives .
  2. In and : and .
  3. So (SAS similarity).
  4. Hence .
  5. In , .
  6. So , i.e. .
Q335 marksLong AnswerStatistics

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the mean and mode of the data :
Monthly Consumption (in units): 65 – 85, 85 – 105, 105 – 125, 125 – 145, 145 – 165, 165 – 185, 185 – 205
Number of Consumers: 4, 5, 13, 20, 14, 8, 4

Show answer & solution
Answer: Mean units; Mode units
  1. Class marks : 75, 95, 115, 135, 155, 175, 195. Take assumed mean , , : .
  2. : ; , .
  3. Mean units.
  4. Mode: the highest frequency is 20, so the modal class is 125 – 145.
  5. , , , , .
  6. Mode units.

Vijay invested certain amounts of money in two schemes A and B, which offer interest at the rate of per annum and per annum, respectively. He received ₹ 1,860 as the total annual interest. However, had he interchanged the amounts of investments in the two schemes, he would have received ₹ 20 more as annual interest. How much money did he invest in each scheme ?

Show answer & solution
Answer: Scheme A: ₹ 12,000; Scheme B: ₹ 10,000
  1. Let the amounts in schemes A and B be ₹ and ₹ .
  2. , i.e. ... (1)
  3. After interchanging: , i.e. ... (2)
  4. Adding: , so ... (3)
  5. Subtracting (1) from (2): ... (4)
  6. From (3) and (4): , .
  7. Check: and .
  8. He invested ₹ 12,000 in scheme A and ₹ 10,000 in scheme B.
Also asked in: 2025 Standard 30/1/1
Q355 marksLong AnswerQuadratic Equations

A two-digit number is such that the product of its digits is . When is added to this number, the digits interchange their places. Find the number.

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Answer:
  1. Let the tens digit be and the units digit be ; the number is .
  2. , so and .
  3. : , i.e. .
  4. , so (a digit cannot be negative) and .
  5. The number is . Check: and .
OR
Q35 (OR) (OR)5 marksLong AnswerQuadratic Equations

A student scored a total of marks in class tests in Mathematics and Science. Had he scored marks less in Science and marks more in Mathematics, the product of his marks would have been . Find his marks in the two subjects.

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Answer: Mathematics , Science ; or Mathematics , Science
  1. Let the marks in Mathematics be ; then Science .
  2. , i.e. .
  3. , so .
  4. , so or .
  5. If : Mathematics , Science (check: ).
  6. If : Mathematics , Science (check: ).
Q364 marksCase StudyAreas Related to Circles

A brooch is a decorative piece often worn on clothing like jackets, blouses or dresses to add elegance. Made from precious metals and decorated with gemstones, brooches come in many shapes and designs.
One such brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divide the circle into 10 equal sectors as shown in the figure.
Based on the above given information, answer the following questions :
(i) Find the central angle of each sector. (1)
(ii) Find the length of the arc ACB. (1)
(iii) (a) Find the area of each sector of the brooch. (2)
OR
(iii) (b) Find the total length of the silver wire used. (2)

Diagram for CBSE 2025 Class 10 Maths question 36
Show answer & solution
Answer: (i) (ii) mm (iii) (a) mm OR (iii) (b) mm
  1. Radius mm; circumference mm.
  2. (i) Central angle of each sector .
  3. (ii) Arc ACB is the arc of one sector: length mm.
  4. (iii) (a) Area of each sector mm.
  5. (iii) (b) Wire circumference diameters mm.

Amrita stood near the base of a lighthouse, gazing up at its towering height. She measured the angle of elevation to the top and found it to be . Then, she climbed a nearby observation deck, 40 metres higher than her original position and noticed the angle of elevation to the top of lighthouse to be .
Based on the above given information, answer the following questions :
(i) If CD is h metres, find the distance BD in terms of 'h'. (1)
(ii) Find distance BC in terms of 'h'. (1)
(iii) (a) Find the height CE of the lighthouse [Use ] (2)
OR
(iii) (b) Find distance AE, if AC = 100 m. (2)

Diagram for CBSE 2025 Class 10 Maths question 37
Show answer & solution
Answer: (i) m (ii) m (iii) (a) m OR (iii) (b) m
  1. is the original position, the deck ( m), the lighthouse, , m, .
  2. (i) In right : , so m.
  3. (ii) m.
  4. (iii) (a) and . In right : .
  5. , so m.
  6. m.
  7. (iii) (b) In right : , so m.
Q384 marksCase StudyArithmetic Progressions

A school is organizing a charity run to raise funds for a local hospital. The run is planned as a series of rounds around a track, with each round being 300 metres. To make the event more challenging and engaging, the organizers decide to increase the distance of each subsequent round by 50 metres. For example, the second round will be 350 metres, the third round will be 400 metres and so on. The total number of rounds planned is 10.
Based on the information given above, answer the following questions :
(i) Write the fourth, fifth and sixth term of the Arithmetic Progression so formed. (1)
(ii) Determine the distance of the round. (1)
(iii) (a) Find the total distance run after completing all 10 rounds. (2)
OR
(iii) (b) If a runner completes only the first 6 rounds, what is the total distance run by the runner ? (2)

Show answer & solution
Answer: (i) m, m, m (ii) m (iii) (a) m OR (iii) (b) m
  1. AP: , .
  2. (i) , , (metres).
  3. (ii) m.
  4. (iii) (a) m.
  5. (iii) (b) m.
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