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CBSE Class 10 Maths Basic 2023 Question Paper 430/6/2 with Solutions

All 44 questions from the CBSE Class 10 Mathematics Basic board paper, Set 430/6/2 (2023), with answers and step-by-step solutions. Total 80 marks. Tap “Show answer & solution” under any question.

Set 430/1/1Set 430/1/2Set 430/1/3Set 430/2/1Set 430/2/2Set 430/2/3Set 430/4/1Set 430/4/2Set 430/4/3Set 430/5/1Set 430/5/2Set 430/5/3Set 430/6/1Set 430/6/2Set 430/6/3
Q11 markMCQReal Numbers

The HCF of the smallest 2-digit number and the smallest composite number is

  1. (A)4
  2. (B)20
  3. (C)2
  4. (D)10
Show answer & solution
Answer: (C) 2
  1. Smallest 2-digit number = 10; smallest composite number = 4.
  2. , , so HCF .

The value of ‘p’ if (–2, p) lies on the line represented by the equation , is

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

Distance of the point (6, 5) from the y-axis is

  1. (A)6 units
  2. (B)5 units
  3. (C) units
  4. (D)0 unit
Show answer & solution
Answer: (A) 6 units
  1. The distance of a point from the y-axis is the absolute value of its x-coordinate.
  2. Distance = 6 units.
Q41 markMCQStatistics

If the mean of 6, 7, , 8, y, 14 is 9, then

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

If (2, 4) is the mid-point of the line-segment joining (6, 3) and (a, 5), then the value of a is

  1. (A)2
  2. (B)4
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. , so and .
  2. (Check: .)
Q61 markMCQReal Numbers

If n is a natural number, then cannot end with digit

  1. (A)0
  2. (B)2
  3. (C)4
  4. (D)6
Show answer & solution
Answer: (A) 0
  1. has only the prime factor 2.
  2. A number ending in 0 must have both 2 and 5 as prime factors, so cannot end with 0.
  3. (Its last digits cycle 8, 4, 2, 6.)
Q71 markMCQStatistics

The time, in seconds, taken by 150 athletes to run a 100 m hurdle race are tabulated below :
Time (sec.): 13-14, 14-15, 15-16, 16-17, 17-18, 18-19
Number of Athletes: 2, 4, 5, 71, 48, 20
The number of athletes who completed the race in less than 17 seconds is

  1. (A)11
  2. (B)71
  3. (C)82
  4. (D)68
Show answer & solution
Answer: (C) 82
  1. Athletes taking less than 17 s are those in the classes 13-14, 14-15, 15-16 and 16-17.
  2. Number .
Also asked in: 2023 Basic 430/6/1
Q81 markMCQProbability

An unbiased die is thrown. The probability of getting an odd prime number is

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. Outcomes: 1, 2, 3, 4, 5, 6. Odd primes: 3 and 5.
  2. P(odd prime) .

In , right angled at C, if , then the value of is

Diagram for CBSE 2023 Class 10 Maths question 9
  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (B)
  1. With the right angle at C, and .
  2. So .
Also asked in: 2023 Basic 430/6/1
Q101 markMCQCircles

In the given figure, PQ and PR are tangents drawn from P to the circle with centre O such that . The measure of is.

Diagram for CBSE 2023 Class 10 Maths question 10
  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (C)
  1. (radius tangent).
  2. In quadrilateral PQOR, .
Q111 markMCQReal Numbers

The prime factorisation of the number 2304 is

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. .
  2. So (check: ).
Also asked in: 2023 Basic 430/6/1

Area of a quadrant of a circle of radius 7 cm is

  1. (A)154 cm
  2. (B)77 cm
  3. (C) cm
  4. (D) cm
Show answer & solution
Answer: (C) cm
  1. Area of quadrant cm.

The term of an A.P, whose first term is and the common difference is 4, is

  1. (A)78
  2. (B)74
  3. (C)
  4. (D)
Show answer & solution
Answer: (B) 74
  1. .
  2. .
Q141 markMCQPolynomials

The zeroes of the polynomial are :

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

The mean of first ten natural numbers is

  1. (A)5.5
  2. (B)55
  3. (C)45
  4. (D)4.5
Show answer & solution
Answer: (A) 5.5
  1. Sum of 1 to 10 .
  2. Mean .
Q161 markMCQProbability

One card is drawn at random from a well-shuffled deck of 52 playing cards. What is the probability of getting a black king ?

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. There are 2 black kings (spades and clubs) in 52 cards.
  2. P(black king) .

The value of ‘k’ for which the system of equations and have no solution, is

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. No solution when .
  2. gives ; and .
  3. So .
Q181 markMCQPolynomials

The graph of is shown in the figure for some polynomial .
The number of zeroes of is

Diagram for CBSE 2023 Class 10 Maths question 18
  1. (A)0
  2. (B)2
  3. (C)3
  4. (D)4
Show answer & solution
Answer: (A) 0
  1. The zeroes of are the x-coordinates of the points where the graph meets the x-axis.
  2. The graph lies entirely above the x-axis and never meets it, so there are no zeroes.
Also asked in: 2023 Basic 430/6/1
Q191 markAssertion–ReasonIntroduction to Trigonometry

Assertion (A) : For , and are reciprocal of each other.
Reason (R) :

  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: (C) Assertion (A) is true, but Reason (R) is false.
  1. , so the two are reciprocals: A is true.
  2. But , not 1: R is false.
Q201 markAssertion–ReasonProbability

Assertion (A) : The probability that a leap year has 53 Sundays is .
Reason (R) : The probability that a non-leap year has 53 Sundays is .

  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: (B) Both A and R are true, but R is not the correct explanation of A.
  1. A leap year has 366 days = 52 weeks + 2 days. The 2 extra days can be (Sun, Mon), (Mon, Tue), ..., (Sat, Sun): 7 cases, 2 contain a Sunday. P , so A is true.
  2. A non-leap year has 365 days = 52 weeks + 1 day; the extra day is Sunday in 1 of 7 cases. P , so R is true.
  3. R is about a non-leap year, so it does not explain A.
Q212 marksVery Short AnswerProbability

A box contains 20 discs which are numbered from 1 to 20. If one disc is drawn at random from the box, then find the probability that the number on the drawn disc is a
(i) 2-digit number
(ii) number less than 10

Show answer & solution
Answer: (i) (ii)
  1. Total outcomes = 20.
  2. (i) 2-digit numbers: 10 to 20, i.e. 11 numbers. P .
  3. (ii) Numbers less than 10: 1 to 9, i.e. 9 numbers. P .
Also asked in: 2023 Basic 430/6/1
Q222 marksVery Short AnswerCircles

From a point P, the length of the tangent to a circle is 24 cm and the distance of P from the centre of the circle is 25 cm. Find the radius of the circle.

Show answer & solution
Answer: 7 cm
  1. The radius is perpendicular to the tangent at the point of contact, so radius, tangent and OP form a right triangle with hypotenuse OP.
  2. cm.
Q232 marksVery Short AnswerQuadratic Equations

Find the value of k for which the roots of the quadratic equation are real and equal.

Show answer & solution
Answer:
  1. For real and equal roots, .
  2. , so .
  3. .
OR
Q23 (OR) (OR)2 marksVery Short AnswerQuadratic Equations

If one root of the quadratic equation is seven times the other, then find the value of k.

Show answer & solution
Answer:
  1. Let the roots be and .
  2. Sum: , so .
  3. Product: , so .
  4. , so and .
Q242 marksVery Short AnswerPolynomials

Find a quadratic polynomial whose zeroes are 6 and .

Show answer & solution
Answer:
  1. Sum of zeroes ; product .
  2. Polynomial (or any non-zero multiple of it).
OR
Q24 (OR) (OR)2 marksVery Short AnswerPolynomials

Find the zeroes of the polynomial .

Show answer & solution
Answer: 2 and
  1. .
  2. Zeroes: and .
Q252 marksVery Short AnswerIntroduction to Trigonometry

Evaluate :

Show answer & solution
Answer:
  1. , , .
  2. Value .
Q263 marksShort AnswerReal Numbers

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

Show answer & solution
Answer: Proved.
  1. Suppose is rational, say where is rational.
  2. Then .
  3. The right side is rational, so would be rational.
  4. This contradicts the fact that is irrational. Hence is irrational.
Q273 marksShort AnswerCoordinate Geometry

If A and B are (–2, –2) and (2, –4) respectively; then find the co-ordinates of the point P such that .

Show answer & solution
Answer:
  1. , so (P lies on AB).
  2. .
Q283 marksShort AnswerIntroduction to Trigonometry

Prove that

Show answer & solution
Answer: Proved.
  1. LHS
  2. Multiply numerator and denominator by : = RHS.
OR
Q28 (OR) (OR)3 marksShort AnswerIntroduction to Trigonometry

Prove that

Show answer & solution
Answer: Proved.
  1. LHS
  2. = RHS.
Q293 marksShort AnswerTriangles

E is a point on the side AD produced of a parallelogram ABCD and BE intersects CD at F. Show that .

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Answer: Proved.
  1. In and :
  2. (opposite angles of parallelogram ABCD).
  3. AD BC, so AE BC and BE is a transversal; hence (alternate angles).
  4. By AA similarity, .
OR
Q29 (OR) (OR)3 marksShort AnswerTriangles

In the given figure, CM and RN are respectively the medians of and . If , then prove that .

Diagram for CBSE 2023 Class 10 Maths question 29 (OR)
Show answer & solution
Answer: Proved.
  1. Since : and .
  2. M and N are mid-points of AB and PQ, so and .
  3. Hence .
  4. In and : and .
  5. By SAS similarity, .
Q303 marksShort AnswerQuadratic Equations

The sum of the reciprocals of Varun’s age (in years) 3 years ago and 5 years from now is . Find his present age.

Show answer & solution
Answer: 7 years
  1. Let the present age be years.
  2. , so .
  3. , so .
  4. Age cannot be negative, so . Present age = 7 years.
Also asked in: 2023 Basic 430/6/1
Q313 marksShort AnswerStatistics

A survey conducted on 20 households in a locality by a group of students resulted in the following frequency table for the number of family members in a household :
Family size: 1-3, 3-5, 5-7, 7-9, 9-11
Number of Families: 7, 8, 2, 2, 1
Find the median of this data.

Show answer & solution
Answer: 3.75
  1. Cumulative frequencies: 7, 15, 17, 19, 20. , .
  2. Median class = 3-5 (first cf ).
  3. , , , .
  4. Median .
Q325 marksLong AnswerArithmetic Progressions

The first term of an A.P. is 5, the last term is 45 and the sum of all the terms is 400. Find the number of terms and the common difference of the A.P.

Show answer & solution
Answer: Number of terms = 16; common difference =
  1. : , so .
  2. : , so .
Q335 marksLong AnswerSurface Areas and Volumes

A solid is in the shape of a cone standing on a hemisphere with both their diameters being equal to 1 cm and the height of the cone is equal to its radius. Find the volume of the solid. [Use ]

Show answer & solution
Answer: 0.3925 cm (about 0.39 cm)
  1. Radius cm; height of cone cm.
  2. Volume of cone ; volume of hemisphere .
  3. Volume of solid cm.
Q345 marksLong AnswerTriangles

Prove that a line drawn parallel to one side of a triangle to intersect the other two sides in distinct points, divides the two sides in the same ratio.

Show answer & solution
Answer: Proved.
  1. Given: In , a line DE BC meets AB at D and AC at E. To prove: .
  2. Construction: Join BE and CD; draw EN AB and DM AC.
  3. ar(ADE) and ar(BDE) , so .
  4. Similarly ar(ADE) and ar(DEC) , so .
  5. Triangles BDE and DEC are on the same base DE and between the same parallels DE and BC, so ar(BDE) = ar(DEC).
  6. Therefore .
OR
Q34 (OR) (OR)5 marksLong AnswerTriangles

In the given figure, and . Prove that .

Diagram for CBSE 2023 Class 10 Maths question 34 (OR)
Show answer & solution
Answer: Proved.
  1. In , i.e. , so (sides opposite equal angles).
  2. Given , so .
  3. In and : and (common angle ).
  4. By SAS similarity, .

From a point on a bridge across a river, the angles of depression of the banks on opposite sides of the river are and respectively. If the bridge is at a height of 3 m from the banks, find the width of the river. (Use )

Show answer & solution
Answer: 8.19 m
  1. Let P be the point on the bridge, 3 m above the foot D on the line joining the banks A and B, with A and B on opposite sides of D.
  2. Angle of depression of A is : , so m.
  3. Angle of depression of B is : , so m.
  4. Width m.
OR
Q35 (OR) (OR)5 marksLong AnswerSome Applications of Trigonometry

From a point on the ground, the angle of elevation of the bottom and top of a transmission tower fixed at the top of a 20 m high building are and respectively. Find the height of the tower. (Use )

Show answer & solution
Answer: 14.6 m
  1. Let P be the point on the ground at distance m from the foot of the building, building height 20 m and tower height m.
  2. Bottom of tower: , so m.
  3. Top of tower: , so .
  4. m.

Lokesh, a production manager in Mumbai, hires a taxi everyday to go to his office. The taxi charges in Mumbai consists of a fixed charges together with the charges for the distance covered. His office is at a distance of 10 km from his home. For a distance of 10 km to his office, Lokesh paid ₹ 105. While coming back home, he took another route. He covered a distance of 15 km and the charges paid by him were ₹ 155.
Based on the above information, answer the following questions :
(i) What are the fixed charges ? (1)
(ii) What are the charges per km ? (1)
(iii) If fixed charges are ₹ 20 and charges per km are ₹ 10, then how much Lokesh have to pay for travelling a distance of 10 km ? (2)
OR (iii) Find the total amount paid by Lokesh for travelling 10 km from home to office and 25 km from office to home. [Fixed charges and charges per km are as in (i) & (ii). (2)

Show answer & solution
Answer: (i) ₹ 5 (ii) ₹ 10 (iii) ₹ 120 OR (iii) ₹ 360
  1. Let fixed charge = ₹ and charge per km = ₹ .
  2. and . Subtracting, , so and .
  3. (i) Fixed charges = ₹ 5.
  4. (ii) Charges per km = ₹ 10.
  5. (iii) ₹ 120.
  6. OR (iii) Home to office: ; office to home: . Total = ₹ 360.
Q374 marksCase StudyCircles

People of a circular village Dharamkot want to construct a road nearest to it. The road cannot pass through the village. But the people want the road at a shortest distance from the centre of the village. Suppose the road starts from A which is outside the circular village (as shown in the figure) and touch the boundary of the circular village at B such that AB = 20 m. Also the distance of the point A from the centre O of the village is 25 m.
Based on the above information, answer the following questions :
(i) If B is the mid-point of AC, then find the distance AC. (1)
(ii) Find the shortest distance of the road from the centre of the village. (1)
(iii) Find the circumference of the village. (2)
OR (iii) Find the area of the village. (2)

Diagram for CBSE 2023 Class 10 Maths question 37
Show answer & solution
Answer: (i) 40 m (ii) 15 m (iii) m m OR (iii) m m
  1. (i) m.
  2. (ii) The road AC touches the circle at B, so OB AC and OB is the shortest distance. m.
  3. (iii) Radius = 15 m. Circumference m.
  4. OR (iii) Area m.
Q384 marksCase StudyAreas Related to Circles

For the inauguration of ‘Earth day’ week in a school, badges were given to volunteers. Organisers purchased these badges from an NGO, who made these badges in the form of a circle inscribed in a square of side 8 cm.
O is the centre of the circle and :
Based on the above information, answer the following questions :
(i) What is the area of square ABCD ? (1)
(ii) What is the length of diagonal AC of square ABCD ? (1)
(iii) Find the area of sector OPRQO. (2)
OR (iii) Find the area of remaining part of square ABCD when area of circle is excluded. (2)

Diagram for CBSE 2023 Class 10 Maths question 38
Show answer & solution
Answer: (i) 64 cm (ii) cm (iii) cm cm OR (iii) cm cm
  1. (i) Area cm.
  2. (ii) cm.
  3. (iii) Radius of circle cm, angle . Area of sector cm.
  4. OR (iii) Area of circle cm. Remaining area cm.
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