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Class 9–10 Maths quiz — 11 October 2026

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

Question 1 · Coordinate geometry

Find the distance between the points (−3, 2) and (13, 32).

  1. A. 33
  2. B. 34 ✓
  3. C. 480
  4. D. 35

Answer: 34. Distance = √(16² + 30²) = √1156 = 34.

Question 2 · Arithmetic progressions

The first term of an AP is 11 and the common difference is 8. What is its 15th term?

  1. A. 139
  2. B. 115
  3. C. 131
  4. D. 123 ✓

Answer: 123. nth term = a + (n − 1)d = 11 + 14 × 8 = 123.

Question 3 · Pythagoras theorem

A right-angled triangle has legs of 20 cm and 21 cm. How long is the hypotenuse?

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

Answer: 29 cm. c² = 20² + 21² = 400 + 441 = 841, so c = 29 cm.

Question 4 · Probability

A bag holds 6 red, 6 blue balls. One ball is picked at random. What is the probability it is red?

  1. A. 7/12
  2. B. 1
  3. C. 6/13
  4. D. 1/2 ✓

Answer: 1/2. Probability = favourable ÷ total = 6/12 = 1/2.

Question 5 · Linear equations

If x + y = 21 and x − y = 3, what is x?

  1. A. 9
  2. B. 24
  3. C. 13
  4. D. 12 ✓

Answer: 12. Add the two equations: 2x = 21 + 3 = 24, so x = 12.

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