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CBSE Class 10 Maths Basic 2024 Question Paper 430/4/3 with Solutions

All 44 questions from the CBSE Class 10 Mathematics Basic board paper, Set 430/4/3 (2024), with answers and step-by-step solutions. Total 80 marks. Tap “Show answer & solution” under any question.

Set 430/1/2Set 430/1/3Set 430/2/1Set 430/2/2Set 430/2/3Set 430/3/1Set 430/3/2Set 430/3/3Set 430/4/1Set 430/4/2Set 430/4/3Set 430/5/1Set 430/5/2Set 430/5/3

A lamp post 9 m high casts a shadow m long on the ground. The Sun’s elevation at this moment is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. Let the angle of elevation be . Then .
  2. So .

The region between a chord and either of the two arcs of a circle is called :

  1. (A)an arc
  2. (B)a sector
  3. (C)a segment
  4. (D)a semicircle
Show answer & solution
Answer: (C) a segment
  1. By definition, the region bounded by a chord and either of its arcs is a segment of the circle.

The area of the sector of a circle with radius 6 cm which subtends an angle of at the centre of the circle is :

  1. (A) cm
  2. (B) cm
  3. (C) cm
  4. (D) cm
Show answer & solution
Answer: (C) cm
  1. Area
  2. cm.

The roots of the quadratic equation is/are :

  1. (A)2 only
  2. (B)
  3. (C)4 only
  4. (D)
Show answer & solution
Answer: (B)
  1. .
  2. So or .
Also asked in: 2024 Basic 430/4/1
Q51 markMCQTriangles

In the given figure, if , then the value of is :

Diagram for CBSE 2024 Class 10 Maths question 5
  1. (A) cm
  2. (B) cm
  3. (C) cm
  4. (D)4 cm
Show answer & solution
Answer: (C) cm
  1. gives .
  2. , so .
  3. cm.
Q61 markMCQProbability

A fair die is thrown once. The probability of getting a composite number less than 5 is :

  1. (A)
  2. (B)
  3. (C)0
  4. (D)
Show answer & solution
Answer: (D)
  1. Outcomes: 1, 2, 3, 4, 5, 6 (6 outcomes).
  2. Composite numbers less than 5: only 4.
  3. .
Q71 markMCQPolynomials

What should be added to the polynomial , so that 3 is a zero of the resulting polynomial ?

  1. (A)1
  2. (B)2
  3. (C)4
  4. (D)5
Show answer & solution
Answer: (B) 2
  1. Value at : .
  2. Adding gives , so .
Q81 markMCQCircles

A tangent to a circle is a line that touches the circle at :

  1. (A)one point only
  2. (B)two points
  3. (C)three points
  4. (D)infinite number of points
Show answer & solution
Answer: (A) one point only
  1. A tangent meets the circle at exactly one point, called the point of contact.

The distance between the points and is :

  1. (A)15 units
  2. (B)5 units
  3. (C)25 units
  4. (D)41 units
Show answer & solution
Answer: (B) 5 units
  1. Distance
  2. units.
Also asked in: 2024 Basic 430/4/1
Q101 markMCQReal Numbers

If , then is equal to :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. .
  2. So , and .
Also asked in: 2024 Basic 430/4/1

Which of the following is not a quadratic equation ?

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (C)
  1. (A) , quadratic.
  2. (B) , quadratic.
  3. (C) , which is linear, not quadratic.
  4. (D) Multiplying by gives , quadratic.
  5. So the answer is (C).
Q121 markMCQPolynomials

The number of quadratic polynomials having zeroes and 3 is :

  1. (A)1
  2. (B)2
  3. (C)3
  4. (D)more than 3
Show answer & solution
Answer: (D) more than 3
  1. Every polynomial with has zeroes and 3.
  2. Since can be any non-zero real number, there are infinitely many such polynomials, i.e. more than 3.
Q131 markMCQStatistics

The following distribution gives the daily income of 50 workers of a factory :
Income (in ₹): 400–424, 425–449, 450–474, 475–499, 500–524
Number of workers: 12, 14, 8, 6, 10
The lower limit of the modal class is :

  1. (A)425
  2. (B)449
  3. (C)
  4. (D)
Show answer & solution
Answer: (C)
  1. The highest frequency is 14, so the modal class is 425–449.
  2. The classes are not continuous (gap of 1), so subtract 0.5 from each lower limit and add 0.5 to each upper limit.
  3. The modal class becomes 424.5–449.5, so its lower limit is 424.5.

The common difference of an A.P., if , is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. .
  2. .
Q151 markMCQCircles

In the given figure, PA is a tangent from an external point P to a circle with centre O. If , then the measure of is :

Diagram for CBSE 2024 Class 10 Maths question 15
  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. The tangent is perpendicular to the radius at the point of contact, so .
  2. In : .

If , then the value of is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (B)
  1. , so .

The midpoint of the line segment joining the points and is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (B)
  1. Mid-point .
Q181 markMCQStatistics

The mode and mean of a data are 7 and 8 respectively. Then, the median of the data is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)33
Show answer & solution
Answer: (A)
  1. Empirical relation: .
  2. , so Median .

Assertion (A): The pair of linear equations and have infinitely many solutions.
Reason (R): The pair of linear equations and have infinitely many solutions, if .

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of 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: (D) Assertion (A) is false, but Reason (R) is true.
  1. , .
  2. Since , the pair has a unique solution, so A is false.
  3. R is the correct condition for infinitely many solutions, so R is true.
  4. Answer (D).
Q201 markAssertion–ReasonProbability

Assertion (A): The probability of getting number 8 on rolling a die is zero (0).
Reason (R): The probability of an impossible event is zero (0).

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of 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 Assertion (A).
  1. A die shows only 1 to 6, so getting 8 is an impossible event.
  2. The probability of an impossible event is 0, so both A and R are true and R explains A.
  3. Answer (A).
Q212 marksVery Short AnswerIntroduction to Trigonometry

Evaluate :

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Answer: 4
  1. and .
  2. .
Q222 marksVery Short AnswerPolynomials

If , are zeroes of the polynomial , then find the value of .

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Answer:
  1. and .
  2. .
OR
Q22 (OR) (OR)2 marksVery Short AnswerPolynomials

Find a quadratic polynomial whose zeroes are and 6.

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Answer: (or any non-zero multiple of it)
  1. Sum of zeroes ; product .
  2. Required polynomial .
Q232 marksVery Short AnswerTriangles

In the given figure, . Prove that .

Diagram for CBSE 2024 Class 10 Maths question 23
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Answer: Proved.
  1. In and :
  2. (alternate angles, , transversal PS).
  3. (vertically opposite angles).
  4. So (AA similarity).
  5. Hence , i.e. .
OR
Q23 (OR) (OR)2 marksVery Short AnswerTriangles

In the given figure, and . Prove that .

Diagram for CBSE 2024 Class 10 Maths question 23 (OR)
Show answer & solution
Answer: Proved.
  1. In , , so by BPT .
  2. In , , so by BPT .
  3. Hence , i.e. .
Q242 marksVery Short AnswerReal Numbers

Given that HCF (306, 1314) = 18, find LCM of (306, 1314).

Show answer & solution
Answer: LCM (306, 1314) = 22338
  1. HCF LCM product of the two numbers.
  2. LCM .
Also asked in: 2024 Basic 430/4/1
Q252 marksVery Short AnswerCircles

XY and PQ are two tangents drawn at the end points of the diameter AB of a circle. Prove that .

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Answer: Proved.
  1. Let O be the centre. XY touches the circle at A and PQ touches it at B.
  2. The tangent at a point is perpendicular to the radius through that point, so and .
  3. Since AB is a diameter, A, O, B are collinear, so and .
  4. Thus ; these are alternate angles made by the transversal AB.
  5. Hence .
Q263 marksShort AnswerReal Numbers

Prove that is an irrational number, if it is given that is an irrational number.

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Answer: Proved.
  1. Suppose is rational, say , rational.
  2. Then , which is rational.
  3. This contradicts the fact that is irrational.
  4. Hence is irrational.
Also asked in: 2024 Basic 430/4/1
Q273 marksShort AnswerQuadratic Equations

Using quadratic formula, find the real roots of the equation , if they exist.

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Answer: No real roots exist.
  1. Here , , .
  2. .
  3. By the quadratic formula , and is not real.
  4. Hence the equation has no real roots.
OR
Q27 (OR) (OR)3 marksShort AnswerQuadratic Equations

Find the values of ‘k’ for which the quadratic equation has real and equal roots. Also, find the roots.

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Answer: ; roots are 1, 1
  1. For equal roots, : .
  2. or .
  3. does not give a quadratic equation, so .
  4. Equation: .
  5. Roots are 1 and 1.
Q283 marksShort AnswerIntroduction to Trigonometry

Prove that :

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Answer: Proved.
  1. LHS .
  2. RHS .
  3. LHS = RHS. Hence proved.
Q293 marksShort AnswerProbability

From a well-shuffled deck of 52 playing cards, all black queens and red kings are removed. One card is selected at random from the remaining cards. Find the probability that the selected card is :
(i) an ace.
(ii) a jack of red colour.
(iii) a king of spade.

Show answer & solution
Answer: (i) (ii) (iii)
  1. Removed cards: 2 black queens and 2 red kings, so 52 − 4 = 48 cards remain.
  2. (i) All 4 aces remain: .
  3. (ii) Red jacks = 2: .
  4. (iii) The king of spades remains (only red kings were removed): .
Q303 marksShort AnswerAreas Related to Circles

A chord of a circle of radius 10 cm subtends a right angle at the centre of the circle. Find the area of the corresponding (i) minor sector (ii) major sector. (Use )

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Answer: (i) cm (ii) cm
  1. Minor sector cm.
  2. Area of circle cm.
  3. Major sector cm.
Q313 marksShort AnswerCircles

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

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Answer: Proved.
  1. Let ABCD circumscribe a circle with centre O, touching AB, BC, CD, DA at P, Q, R, S. Join OA, OB, OC, OD, OP, OQ, OR, OS.
  2. (RHS: , OA common, right angles at P and S), so .
  3. Similarly , , .
  4. The eight angles at O add to : .
  5. So , i.e. .
  6. Similarly . Hence opposite sides subtend supplementary angles at O.
OR
Q31 (OR) (OR)3 marksShort AnswerCircles

If O is the centre of a circle, PQ is a chord and the tangent PR at P makes an angle of with PQ, then find the measure of .

Diagram for CBSE 2024 Class 10 Maths question 31 (OR)
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Answer:
  1. OP is a radius and PR is a tangent at P, so .
  2. .
  3. (radii), so .
  4. .
Q325 marksLong AnswerTriangles

If BD and QM are medians of triangles ABC and PQR, respectively, where , prove that .

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Answer: Proved.
  1. gives and .
  2. D and M are mid-points of AC and PR, so and .
  3. Hence .
  4. In and : and .
  5. So (SAS similarity).
  6. Therefore .
OR
Q32 (OR) (OR)5 marksLong AnswerTriangles

CD and GH are respectively the bisectors of and such that D and H lie on sides AB and FE of and respectively. If , show that :
(i)
(ii)

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Answer: Proved.
  1. gives , , .
  2. Halving, and .
  3. (i) In and : , , so (AA).
  4. Hence .
  5. (ii) In and : , .
  6. So (AA similarity).
Q335 marksLong AnswerSurface Areas and Volumes

Two cubes each of volume 125 cm are joined end to end. Find the volume and the surface area of the resulting cuboid.

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Answer: Volume cm; surface area cm
  1. Edge of each cube cm.
  2. Resulting cuboid: cm, cm, cm.
  3. Volume cm.
  4. Surface area cm.
OR
Q33 (OR) (OR)5 marksLong AnswerSurface Areas and Volumes

A solid is in the shape of a cone surmounted on a hemisphere with both their diameters being equal to 7 cm and the height of the cone is equal to its radius. Find the volume of the solid.

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Answer: cm
  1. cm and height of cone cm.
  2. Volume of cone .
  3. Volume of hemisphere .
  4. Total cm.
Q345 marksLong AnswerArithmetic Progressions

If the sum of the first 7 terms of an A.P. is 91 and that of the first 17 terms is 561, then find the sum of the first n terms and hence find the term.

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Answer: ;
  1. .
  2. .
  3. Subtracting, , so .
  4. .
  5. .

A statue, 1.6 m tall, stands on the top of a pedestal. From a point on the ground, the angle of elevation of the top of the statue is and from the same point, the angle of elevation of the top of the pedestal is . Find the height of the pedestal. (Use )

Show answer & solution
Answer: m
  1. Let the pedestal height be m and the distance of the point from its foot be m.
  2. .
  3. .
  4. .
  5. m.

Deepankar bought 3 notebooks and 2 pens for ₹ 80 and his friend Suryansh bought 4 notebooks and 3 pens for ₹ 110 from the school bookshop.
Based on the above information, answer the following questions.
(i) If the price of one notebook be ₹ and the price of one pen be ₹ , write the given situation algebraically. (1)
(ii) (a) What is the price of one notebook ? (2)
OR (b) What is the price of one pen ? (2)
(iii) What is the total amount to be paid by Suryansh, if he purchases 6 notebooks and 3 pens ? (1)

Show answer & solution
Answer: (i) , (ii) (a) ₹20 OR (b) ₹10 (iii) ₹150
  1. (i) and .
  2. (ii) Multiply the first equation by 3 and the second by 2: , .
  3. Subtracting, . Then .
  4. (a) One notebook costs ₹20. (b) One pen costs ₹10.
  5. (iii) , so ₹150.
Q374 marksCase StudyStatistics

Mutual Fund : A mutual fund is a type of investment vehicle that pools money from multiple investors to invest in securities like stocks, bonds or other securities. Mutual funds are operated by professional money managers, who allocate the fund’s assets and attempt to produce capital gains or income for the fund’s investors.
Net Asset Value (NAV) represents a fund’s per share market value. It is the price at which the investors buy fund shares from a fund company and sell them to a fund company.
The following table shows the Net Asset Value (NAV) per unit of mutual fund of ICICI mutual funds :
NAV (in ₹): 0–5, 5–10, 10–15, 15–20, 20–25
Number of mutual funds: 13, 16, 22, 18, 11
Based on the above information, answer the following questions :
(i) What is the upper limit of modal class of the data ? (1)
(ii) What is the median class of the data ? (1)
(iii) (a) What is the mode NAV of mutual funds ? (2)
OR (b) What is the median NAV of mutual funds ? (2)

Show answer & solution
Answer: (i) 15 (ii) 10–15 (iii) (a) ₹13 OR (b) ₹12.5
  1. (i) Highest frequency 22 is for 10–15, so the modal class is 10–15 and its upper limit is 15.
  2. (ii) , . Cumulative frequencies: 13, 29, 51, 69, 80. The median class is 10–15.
  3. (iii)(a) Mode . Mode NAV = ₹13.
  4. (iii)(b) Median . Median NAV = ₹12.5.
Q384 marksCase StudyCoordinate Geometry

Resident Welfare Association (RWA) of Gulmohar Society in Delhi, have installed three electric poles A, B and C in the society’s common park. Despite these three poles, some parts of the park are still in the dark. So, RWA decides to have one more electric pole D in the park. The park can be modelled as a coordinate system given below.
On the basis of the above information, answer the following questions :
(i) What is the position of the pole C ? (1)
(ii) What is the distance of the pole B from the corner O of the park ? (1)
(iii) (a) Find the position of the fourth pole D so that the four points A, B, C and D form a parallelogram ABCD. (2)
OR (b) Find the distance between poles A and C. (2)

Diagram for CBSE 2024 Class 10 Maths question 38
Show answer & solution
Answer: (i) (ii) units (iii) (a) OR (b) units
  1. From the figure, , , .
  2. (i) Pole C is at .
  3. (ii) units.
  4. (iii)(a) Diagonals of a parallelogram bisect each other, so mid-point of AC = mid-point of BD.
  5. Mid-point of AC . If : , , so .
  6. (iii)(b) units.
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