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Class 9–10 Maths quiz — 8 November 2026

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

Question 1 · Algebraic identities

If a + b = 6 and ab = 2, what is a² + b²?

  1. A. 32 ✓
  2. B. 40
  3. C. 34
  4. D. 36

Answer: 32. (a + b)² = a² + 2ab + b², so a² + b² = 6² − 2 × 2 = 36 − 4 = 32.

Question 2 · Quadratic equations

What is the larger root of x² − 7x + 10 = 0?

  1. A. 6
  2. B. 2
  3. C. 10
  4. D. 5 ✓

Answer: 5. x² − 7x + 10 = (x − 5)(x − 2) = 0, so the roots are 5 and 2. The larger is 5.

Question 3 · Linear equations

If x + y = 25 and x − y = 5, what is x?

  1. A. 10
  2. B. 30
  3. C. 15 ✓
  4. D. 25

Answer: 15. Add the two equations: 2x = 25 + 5 = 30, so x = 15.

Question 4 · Probability

A bag holds 6 red, 1 blue and 5 green balls. One ball is picked at random. What is the probability it is red?

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

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

Question 5 · Mensuration

A cylinder has a radius of 7 cm and a height of 14 cm. What is its volume? (Use π = 22/7)

  1. A. 2156 cm³ ✓
  2. B. 4312 cm³
  3. C. 2310 cm³
  4. D. 308 cm³

Answer: 2156 cm³. Volume = π r² h = 22/7 × 7 × 7 × 14 = 2156 cm³.

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