Class 9–10 Maths quiz — 10 November 2026

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

Question 1 · Algebraic identities

If a + b = 12 and ab = 20, what is a² + b²?

Answer: 104. (a + b)² = a² + 2ab + b², so a² + b² = 12² − 2 × 20 = 144 − 40 = 104.

Question 2 · Probability

Answer: 5/14. Probability = favourable ÷ total = 5/14.

Question 3 · Linear equations

Answer: 13. Add the two equations: 2x = 16 + 10 = 26, so x = 13.

Question 4 · Mensuration

Answer: 1848 cm³. Volume = π r² h = 22/7 × 7 × 7 × 12 = 1848 cm³.

Question 5 · Trigonometry

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

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