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Class 9–10 Maths quiz — 13 October 2026

Questions and answers from this day. Play today's quiz to build your streak.

Question 1 · Trigonometry

Find the value of sin 30° × cos 60° + tan 45°.

  1. A. 1/4
  2. B. 5/4 ✓
  3. C. 3/2
  4. D. 2

Answer: 5/4. Use sin 30° = ½, cos 60° = ½, tan 45° = 1, sin 90° = 1 and cos 0° = 1. sin 30° × cos 60° + tan 45° = 5/4.

Question 2 · Coordinate geometry

Find the distance between the points (5, 3) and (25, 24).

  1. A. 29 ✓
  2. B. 28
  3. C. 30
  4. D. 58

Answer: 29. Distance = √(20² + 21²) = √841 = 29.

Question 3 · Probability

A bag holds 5 red, 5 blue and 5 green balls. One ball is picked at random. What is the probability it is red?

  1. A. 2/5
  2. B. 1
  3. C. 1/3 ✓
  4. D. 5/16

Answer: 1/3. Probability = favourable ÷ total = 5/15 = 1/3.

Question 4 · Mensuration

A cylinder has a radius of 7 cm and a height of 5 cm. What is its volume? (Use π = 22/7)

  1. A. 110 cm³
  2. B. 770 cm³ ✓
  3. C. 1540 cm³
  4. D. 924 cm³

Answer: 770 cm³. Volume = π r² h = 22/7 × 7 × 7 × 5 = 770 cm³.

Question 5 · Pythagoras theorem

A right-angled triangle has legs of 16 cm and 30 cm. How long is the hypotenuse?

  1. A. 14 cm
  2. B. 34 cm ✓
  3. C. 35 cm
  4. D. 46 cm

Answer: 34 cm. c² = 16² + 30² = 256 + 900 = 1156, so c = 34 cm.

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