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CBSE Class 10 Maths Standard 2026 Question Paper 30/3/1 with Solutions

All 44 questions from the CBSE Class 10 Mathematics Standard board paper, Set 30/3/1 (2026), 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 30/5/3

The roots of the quadratic equation are :

  1. (A)5, 3
  2. (B)4, – 4
  3. (C)5, – 3
  4. (D)– 5, 3
Show answer & solution
Answer: (C) 5, – 3
  1. gives
  2. or
  3. Roots: 5 and
Also asked in: 2026 Standard 30/3/3
Q21 markMCQCircles

In the given figure, PQ and PR are tangents to a circle with centre O and radius 3 cm. If , then the length of each tangent is :

Diagram for CBSE 2026 Class 10 Maths question 2
  1. (A) cm
  2. (B)3 cm
  3. (C)6 cm
  4. (D) cm
Show answer & solution
Answer: (A) cm
  1. OP bisects , so
  2. (radius tangent), so in right :
  3. , so cm
Also asked in: 2026 Standard 30/3/3
Q31 markMCQTriangles

In DEF, AB EF. The value of is :

Diagram for CBSE 2026 Class 10 Maths question 3
  1. (A)0, 2
  2. (B)2 only
  3. (C)– 2
  4. (D)1
Show answer & solution
Answer: (B) 2 only
  1. From the figure: DA , AE , DB , BF
  2. By BPT, :
  3. , so
  4. , so or
  5. would make DA , so only
Also asked in: 2026 Standard 30/3/2
Q41 markMCQReal Numbers

is :

  1. (A)a prime number
  2. (B)divisible by 13
  3. (C)a composite number
  4. (D)an odd number
Show answer & solution
Answer: (C) a composite number
  1. It has factors other than 1 and itself, so it is composite
  2. (432 is even and , so it is not odd and not divisible by 13)
Q51 markMCQProbability

Two dice are rolled together. The probability that the sum of the numbers obtained is divisible by 6, is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. Total outcomes
  2. Sum 6: (1, 5), (2, 4), (3, 3), (4, 2), (5, 1), i.e. 5 outcomes
  3. Sum 12: (6, 6), i.e. 1 outcome
  4. P
Also asked in: 2026 Standard 30/3/3

The number of multiples of 4 lying between 12 and 250 is :

  1. (A)59
  2. (B)59.5
  3. (C)60
  4. (D)61
Show answer & solution
Answer: (A) 59
  1. Multiples of 4 between 12 and 250: 16, 20, ..., 248
  2. , so ,
Also asked in: 2026 Standard 30/3/2

A cone of maximum size is carved out from a solid cube of edge length . The volume of the cone is :

Diagram for CBSE 2026 Class 10 Maths question 7
  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (A)
  1. Largest cone: base radius , height
  2. Volume

Equation of another line parallel to the line represented by is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (C)
  1. Parallel lines need
  2. For and : and , so parallel
  3. (A) is , (B) is , (D) is : none of these has the right ratio
Also asked in: 2026 Standard 30/3/2

If the length of the shadow of a tower is times that of its height, then altitude of the Sun is :

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

If the roots of the quadratic equation are real and equal, then the value(s) of is/are :

  1. (A)
  2. (B)0
  3. (C)4
  4. (D)– 5
Show answer & solution
Answer: (A)
  1. Equal roots:
  2. , so

The term of the A.P. is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (B)
  1. ,
Q121 markMCQCircles

In the given figure, PT is a tangent to the circle with centre O and radius r. If , then the length of OP is :

Diagram for CBSE 2026 Class 10 Maths question 12
  1. (A)
  2. (B)
  3. (C)2r
  4. (D)
Show answer & solution
Answer: (A)
  1. , so is right-angled at T
  2. , so
Q131 markMCQTriangles

It is given that ABC ~ QRP such that AB = 9 cm, BC = 5 cm and PR = 2 cm. Length of side QR is :

  1. (A)0.9 cm
  2. (B) cm
  3. (C) cm
  4. (D)3.6 cm
Show answer & solution
Answer: (D) 3.6 cm
  1. gives
  2. , so cm
Q141 markMCQPolynomials

The sum and product of zeroes of a quadratic polynomial p(x) are and 2 respectively. The polynomial p(x) is :

  1. (A)
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (D)
  1. With :
  2. Check: sum , product
Also asked in: 2026 Standard 30/3/2

Given that , the value of is :

  1. (A)
  2. (B)
  3. (C)1
  4. (D)
Show answer & solution
Answer: (C) 1
  1. , so ,
Q161 markMCQStatistics

The median and mode of a distribution are 25.2 and 26.1 respectively. The mean of the distribution is :

  1. (A)24.75
  2. (B)24.25
  3. (C)24.3
  4. (D)25.5
Show answer & solution
Answer: (A) 24.75
  1. Empirical relation: Mode Median Mean
  2. Mean Mean
  3. Mean

In the given figure, ABC is an equilateral triangle. AD is a median of the triangle joining the points A, D(0, 0). Points B and C are (in same order) :

Diagram for CBSE 2026 Class 10 Maths question 17
  1. (A)(– 5, 0), (5, 0)
  2. (B)
  3. (C)(– 10, 0), (10, 0)
  4. (D)
Show answer & solution
Answer: (B)
  1. AD is the height of the equilateral triangle
  2. Height side, so side
  3. D is the midpoint of BC on the x-axis, so BD = DC
  4. B, C

The value of is :

  1. (A)0
  2. (B)
  3. (C)
  4. (D)
Show answer & solution
Answer: (C)
  1. ,
Also asked in: 2026 Standard 30/3/3
Q191 markAssertion–ReasonCircles

Assertion (A) : Radius is the smallest distance of a tangent from the centre of the circle.
Reason (R) : Radius is perpendicular to the tangent.

  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 A and R are true and R is the correct explanation of A.
  1. The radius to the point of contact is perpendicular to the tangent, so R is true
  2. The perpendicular is the shortest distance from a point to a line, so the radius is the shortest distance from the centre to the tangent: A is true
  3. A follows from R, so R explains A
Q201 markAssertion–ReasonIntroduction to Trigonometry

Assertion (A) : is not defined at .
Reason (R) : .

  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: (B) Both A and R are true, but R is not the correct explanation of A.
  1. At , , not defined: A is true
  2. , , so R is true
  3. is undefined because , not because , so R does not explain A
Q212 marksVery Short AnswerReal Numbers

Find the length of the plank that can be used to measure the lengths 4 m 20 cm and 5 m 4 cm exactly, in the least time.

Show answer & solution
Answer: 84 cm
  1. Lengths: 420 cm and 504 cm; the required length is their HCF
  2. HCF
  3. Length of plank cm
Q222 marksVery Short AnswerArithmetic Progressions

In an A.P., the first term is 32 and the last term is – 10. If the common difference is – 2, then find the number of terms and their sum.

Show answer & solution
Answer: 22 terms; sum = 242
  1. , ,
  2. : , so ,
Also asked in: 2026 Standard 30/3/2
OR
Q22 (OR) (OR)2 marksVery Short AnswerArithmetic Progressions

Find the sum of the first 28 terms of an A.P. whose term is given by .

Show answer & solution
Answer: 1162
  1. ,
Also asked in: 2026 Standard 30/3/2
Q232 marksVery Short AnswerCoordinate Geometry

Diagonals AC and BD of square ABCD intersect at P. Coordinates of points B and D are (9, – 2) and (1, 6) respectively.
(i) Find the co-ordinates of point P.
(ii) Find the length of the side of the square.

Diagram for CBSE 2026 Class 10 Maths question 23
Show answer & solution
Answer: (i) P(5, 2) (ii) 8 units
  1. (i) Diagonals of a square bisect each other, so P is the midpoint of BD
  2. P
  3. (ii) BD
  4. Diagonal side, so side units
OR
Q23 (OR) (OR)2 marksVery Short AnswerCoordinate Geometry

Find the coordinates of a point on the line which is equidistant from (6, 4) and (5, 2).

Show answer & solution
Answer:
  1. Let the point be
  2. , so
  3. With : , so ,
  4. Point:
Q242 marksVery Short AnswerTriangles

The diagonals of a quadrilateral ABCD intersect each other at the point O such that . Show that quadrilateral ABCD is a trapezium.

Show answer & solution
Answer: Proved.
  1. Through O draw OE DC meeting AD at E
  2. In , OE DC, so by BPT
  3. Given , so
  4. In this means E and O divide DA and DB in the same ratio, so by the converse of BPT, EO AB
  5. Hence AB EO DC, so AB DC and ABCD is a trapezium
Q252 marksVery Short AnswerSurface Areas and Volumes

A toy is in the form of a cone mounted on a hemisphere of radius 7 cm. The total height of the toy is 31 cm. Find the total surface area of the toy.

Diagram for CBSE 2026 Class 10 Maths question 25
Show answer & solution
Answer: 858 cm
  1. Height of cone cm, radius cm
  2. Slant height cm
  3. TSA = CSA of cone + CSA of hemisphere
  4. cm
Also asked in: 2026 Standard 30/3/3
Q263 marksShort AnswerIntroduction to Trigonometry

If , then prove that

Show answer & solution
Answer: Proved.
  1. Square both sides:
  2. , so
  3. Hence proved
OR
Q26 (OR) (OR)3 marksShort AnswerIntroduction to Trigonometry

Prove that :

Show answer & solution
Answer: Proved.
  1. LHS
  2. LHS RHS
Q273 marksShort AnswerAreas Related to Circles

In the given figure, chord AB subtends an angle of at the centre of the circle with radius 7 cm. Find (i) perimeter of major sector OACB, and (ii) area of the shaded segment, if area of OAB = 21.2 cm.

Diagram for CBSE 2026 Class 10 Maths question 27
Show answer & solution
Answer: (i) cm (ii) cm
  1. (i) Major sector angle
  2. Arc ACB cm
  3. Perimeter cm
  4. (ii) Area of minor sector OAB cm
  5. Shaded segment cm (approx.)
Q283 marksShort AnswerReal Numbers

Prove that is an irrational number.

Show answer & solution
Answer: Proved.
  1. Suppose is rational: , where are coprime integers,
  2. Then , so 5 divides , hence 5 divides (5 is prime)
  3. Let : , so , hence 5 divides
  4. So 5 divides both and , contradicting that they are coprime
  5. Hence is irrational
Q293 marksShort AnswerQuadratic Equations

Find two consecutive negative integers, sum of whose squares is 481.

Show answer & solution
Answer: – 16 and – 15
  1. Let the integers be and ( negative)
  2. , so , i.e.
  3. , so (negative)
  4. Integers: and (check: )
Q303 marksShort AnswerCoordinate Geometry

A point P(x, 7) divides a line segment joining the points A(– 5, 4) and B(7, 9) in a certain ratio. Find the ratio and hence find the value of x.

Show answer & solution
Answer: Ratio 3 : 2;
  1. Let P divide AB in the ratio
  2. y-coordinate: , so ,
  3. Ratio
Q313 marksShort AnswerCircles

Two tangents PA and PB are drawn to a circle with centre O from an external point P. Prove that .

Show answer & solution
Answer: Proved.
  1. Let
  2. PA = PB (tangents from an external point), so
  3. , so
  4. Hence
OR
Q31 (OR) (OR)3 marksShort AnswerCircles

In the given figure, PA is the tangent to the circle with centre O such that OA = 10 cm, AB = 8 cm and AB OP. Find the length of PB.

Diagram for CBSE 2026 Class 10 Maths question 31 (OR)
Show answer & solution
Answer: cm (about 10.67 cm)
  1. In right : cm
  2. , so is right-angled at A, and AB is the altitude to OP
  3. (AA), so
  4. cm
Q325 marksLong AnswerStatistics

The median of the following data is 137. Find the values of x and y, given that total of frequencies is 68.
Class: 65 – 85, 85 – 105, 105 – 125, 125 – 145, 145 – 165, 165 – 185, 185 – 205
Frequency: 4, 5, x, 20, 14, y, 4

Show answer & solution
Answer: ,
  1. Total: , so
  2. Cumulative frequencies: 4, 9, , , , ...
  3. ; median 137 lies in 125 – 145: , , ,
  4. Median :
  5. , so
Also asked in: 2026 Standard 30/3/2
OR
Q32 (OR) (OR)5 marksLong AnswerStatistics

Find mean and mode of the following distribution :
Class: 0 – 10, 10 – 20, 20 – 30, 30 – 40, 40 – 50, 50 – 60, 60 – 70
Frequency: 3, 6, 11, 10, 13, 3, 4

Show answer & solution
Answer: Mean ; Mode
  1. Class marks : 5, 15, 25, 35, 45, 55, 65
  2. : 15, 90, 275, 350, 585, 165, 260
  3. ,
  4. Mean
  5. Modal class 40 – 50 (highest frequency 13): , , , ,
  6. Mode
Also asked in: 2026 Standard 30/3/2
Q335 marksLong AnswerTriangles

In ABC, AD is a median. X is a point on AD such that AX : XD = 2 : 3. BX is extended so that it intersects AC at Y. Prove that BX = 4 XY.

Diagram for CBSE 2026 Class 10 Maths question 33
Show answer & solution
Answer: Proved.
  1. Through D draw DZ BY meeting AC at Z
  2. In , D is the midpoint of BC and DZ BY, so DZ BY
  3. In , XY DZ, so (AA)
  4. , so XY DZ BY BY
  5. BX = BY − XY XY − XY XY
  6. Hence BX = 4 XY

Solve the following system of equations graphically :
,

Show answer & solution
Answer: ,
  1. : points (3, 0), (5, 1), (1, – 1)
  2. : points (5, 1), (– 3, – 2), (1, – 0.5)
  3. Plot both lines on the same axes
  4. The lines intersect at (5, 1)
  5. Check: and
  6. Solution: ,
Also asked in: 2026 Standard 30/3/3
OR
Q34 (OR) (OR)5 marksLong AnswerPair of Linear Equations in Two Variables

Five years ago, Adil was thrice as old as Bharat. Ten years later Adil shall be twice as old as Bharat. To know the present ages of Adil and Bharat :
(i) form the linear equations representing the above information.
(ii) show that the system of equations is consistent with unique solution.
(iii) find the present ages of Adil and Bharat.

Show answer & solution
Answer: (i) , (ii) , so unique solution (iii) Adil 50 years, Bharat 20 years
  1. (i) Let present ages: Adil , Bharat years
  2. gives
  3. gives
  4. (ii) ,
  5. Since , the system is consistent with a unique solution
  6. (iii) Subtract: , so
  7. Adil is 50 years, Bharat is 20 years
Also asked in: 2026 Standard 30/3/3

A boy standing on a horizontal plane is flying a kite with a string of length 60 m, at an angle of elevation of . Another boy standing on the roof of a 20 m high building, finds the angle of elevation of same kite to be . If both the boys are on opposite sides of the kite, find the distance of the first boy from the base of the building. Also, find the height of the kite from the ground. (Use = 1.73)

Show answer & solution
Answer: Distance = 61.9 m; height of kite = 30 m
  1. Let K be the kite and M the point on the ground directly below it
  2. First boy at A: AK m,
  3. KM m (height of kite)
  4. AM m
  5. Second boy at roof point R, 20 m high: height of kite above roof m
  6. , so horizontal distance from building to M m
  7. Boys are on opposite sides, so distance of first boy from base of building m
Q364 marksCase StudyPolynomials

During a theatre drama, a backdrop of building arches was used. The shape of the curve shown below can be represented by the polynomial , where is the length (in feet) on stage level.
Based on the figure given above, answer the following questions :
(i) Determine the height of the arch. (1)
(ii) (a) Find zeroes of the polynomial p(x). Which points on the graph represent the zeroes ? (2)
OR (ii) (b) Find the span of the arch on the stage floor. (2)
(iii) Write the coordinates of the point of intersection of the above curve with the y-axis. (1)

Diagram for CBSE 2026 Class 10 Maths question 36
Show answer & solution
Answer: (i) 9 feet (ii) (a) Zeroes 4 and – 2, shown by points A(4, 0) and B(– 2, 0); OR (b) 6 feet (iii) (0, 8)
  1. (i) Highest point C has : , so height feet
  2. (ii) (a) gives ,
  3. Zeroes: 4 and ; they are the points A(4, 0) and B(– 2, 0) where the curve meets the x-axis
  4. (ii) (b) Span AB feet
  5. (iii) At : , so the point is (0, 8)
Q374 marksCase StudyProbability

A group of friends wanted to play cards with two identical packs together. While shuffling the cards, three cards are dropped. Rest of the cards are shuffled and one card is drawn at random. Assuming that the dropped cards were a queen of hearts, a ten of spades and an ace of clubs, answer the following questions :
(i) Find the probability that the drawn card is a face card. (1)
(ii) Find the probability that the drawn card is either a king or a queen. (1)
(iii) (a) Do you think that the probability of getting a queen was higher if none of the cards were dropped ? Justify your answer. (2)
OR (iii) (b) Find the probability that the drawn card is a jack. Compare it with the probability when none of the cards were dropped. In which case is the probability of getting a jack higher ? (2)

Show answer & solution
Answer: (i) (ii) (iii) (a) Yes: ; OR (b) , which is higher than when no card is dropped
  1. Two packs: 104 cards; after dropping 3, 101 cards remain
  2. (i) Face cards: 24, one (queen of hearts) dropped, so 23; P
  3. (ii) Kings 8, queens : P
  4. (iii) (a) Now P(queen) ; with no card dropped P(queen)
  5. So yes, the probability was higher if no card was dropped
  6. (iii) (b) All 8 jacks remain: P(jack) ; with no card dropped P(jack)
  7. , so the probability of a jack is higher in the present case (cards dropped)
Q384 marksCase StudySurface Areas and Volumes

A model of Leafy Ball Fountain is made to be kept on the tabletop. Water gently cascades down the ball into a decorative cylindrical pool where it is recycled.
The diameter of spherical ball is 21 cm.
Cylindrical pool – Outer diameter is 50 cm and inner diameter is 40 cm.
Height of solid base is 14 cm.
Height of water filled is 7 cm.
Observe the figure and answer the following questions :
(i) Determine the total height of the fountain. (1)
(ii) Find the volume of the ball. (1)
(iii) (a) If one-third of the ball is submerged in the water, find the volume of the water filled in the pool. (2)
OR (iii) (b) Find the sum of the outer curved surface area of the cylindrical part and surface area of the ball. (2)

Diagram for CBSE 2026 Class 10 Maths question 38
Show answer & solution
Answer: (i) 35 cm (ii) 4851 cm (iii) (a) 7183 cm; OR (b) 4686 cm
  1. (i) The ball rests on the solid base: total height cm
  2. (ii) cm: cm
  3. (iii) (a) Water region: inner radius 20 cm, height 7 cm: cm
  4. Submerged part of ball cm
  5. Water cm
  6. (iii) (b) Outer radius 25 cm, height of cylindrical part cm
  7. Outer CSA cm
  8. Surface area of ball cm
  9. Sum cm
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