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Class 9–10 Maths quiz — 1 October 2026
Questions and answers from this day. Play today's quiz to build your streak.
Question 1 · Pythagoras theorem
A right-angled triangle has legs of 15 cm and 36 cm. How long is the hypotenuse?
- A. 78 cm
- B. 38 cm
- C. 39 cm ✓
- D. 21 cm
Answer: 39 cm. c² = 15² + 36² = 225 + 1296 = 1521, so c = 39 cm.
Question 2 · Probability
A bag holds 3 red, 6 blue and 4 green balls. One ball is picked at random. What is the probability it is red?
- A. 4/13
- B. 3/13 ✓
- C. 3/14
- D. 6/13
Answer: 3/13. Probability = favourable ÷ total = 3/13.
Question 3 · Arithmetic progressions
The first term of an AP is 8 and the common difference is 6. What is its 16th term?
- A. 110
- B. 104
- C. 64
- D. 98 ✓
Answer: 98. nth term = a + (n − 1)d = 8 + 15 × 6 = 98.
Question 4 · Coordinate geometry
Find the distance between the points (−4, 4) and (2, 12).
- A. 9
- B. 10 ✓
- C. 11
- D. 20
Answer: 10. Distance = √(6² + 8²) = √100 = 10.
Question 5 · AP sums
Find the sum of the first 20 terms of the AP that starts at 9 with common difference 2.
- A. 560 ✓
- B. 470
- C. 580
- D. 1120
Answer: 560. Sum = n/2 × (2a + (n − 1)d) = 20/2 × (18 + 38) = 560.
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