Class 9–10 Maths quiz — 20 October 2026

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

Question 1 · Arithmetic progressions

The first term of an AP is 5 and the common difference is 6. What is its 17th term?

Answer: 101. nth term = a + (n − 1)d = 5 + 16 × 6 = 101.

Question 2 · Coordinate geometry

Answer: 5. Distance = √(3² + 4²) = √25 = 5.

Question 3 · 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.

Question 4 · Pythagoras theorem

Answer: 25 cm. c² = 7² + 24² = 49 + 576 = 625, so c = 25 cm.

Question 5 · Algebraic identities

Answer: 144. (a + b)² = a² + 2ab + b², so a² + b² = 14² − 2 × 26 = 196 − 52 = 144.

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