← TeacherCircle Daily
Class 9–10 Maths quiz — 30 October 2026
Questions and answers from this day. Play today's quiz to build your streak.
Question 1 · AP sums
Find the sum of the first 20 terms of the AP that starts at 2 with common difference 5.
- A. 1980
- B. 1010
- C. 1040
- D. 990 ✓
Answer: 990. Sum = n/2 × (2a + (n − 1)d) = 20/2 × (4 + 95) = 990.
Question 2 · Pythagoras theorem
A right-angled triangle has legs of 15 cm and 36 cm. How long is the hypotenuse?
- A. 51 cm
- B. 21 cm
- C. 38 cm
- D. 39 cm ✓
Answer: 39 cm. c² = 15² + 36² = 225 + 1296 = 1521, so c = 39 cm.
Question 3 · Mensuration
A cylinder has a radius of 7 cm and a height of 9 cm. What is its volume? (Use π = 22/7)
- A. 1540 cm³
- B. 396 cm³
- C. 1386 cm³ ✓
- D. 198 cm³
Answer: 1386 cm³. Volume = π r² h = 22/7 × 7 × 7 × 9 = 1386 cm³.
Question 4 · Linear equations
If x + y = 18 and x − y = 6, what is x?
- A. 12 ✓
- B. 18
- C. 13
- D. 6
Answer: 12. Add the two equations: 2x = 18 + 6 = 24, so x = 12.
Question 5 · Probability
A bag holds 3 red, 2 blue and 4 green balls. One ball is picked at random. What is the probability it is red?
- A. 3/2
- B. 4/9
- C. 3/10
- D. 1/3 ✓
Answer: 1/3. Probability = favourable ÷ total = 3/9 = 1/3.
Finding these hard?A teacher can help you master the topics above. Contacting teachers on TeacherCircle is free.