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Class 9–10 Maths quiz — 24 October 2026

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

Question 1 · Quadratic equations

What is the larger root of x² − 9x + 20 = 0?

  1. A. 1
  2. B. 6
  3. C. 9
  4. D. 5 ✓

Answer: 5. x² − 9x + 20 = (x − 5)(x − 4) = 0, so the roots are 5 and 4. The larger is 5.

Question 2 · Coordinate geometry

Find the distance between the points (4, 3) and (14, 27).

  1. A. 27
  2. B. 25
  3. C. 52
  4. D. 26 ✓

Answer: 26. Distance = √(10² + 24²) = √676 = 26.

Question 3 · Pythagoras theorem

A right-angled triangle has legs of 8 cm and 15 cm. How long is the hypotenuse?

  1. A. 18 cm
  2. B. 7 cm
  3. C. 17 cm ✓
  4. D. 34 cm

Answer: 17 cm. c² = 8² + 15² = 64 + 225 = 289, so c = 17 cm.

Question 4 · Algebraic identities

If a + b = 10 and ab = 24, what is a² + b²?

  1. A. 76
  2. B. 54
  3. C. 52 ✓
  4. D. 148

Answer: 52. (a + b)² = a² + 2ab + b², so a² + b² = 10² − 2 × 24 = 100 − 48 = 52.

Question 5 · Linear equations

If x + y = 4 and x − y = 2, what is x?

  1. A. 3 ✓
  2. B. 6
  3. C. 1
  4. D. 4

Answer: 3. Add the two equations: 2x = 4 + 2 = 6, so x = 3.

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