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Class 7–8 Maths quiz — 19 October 2026

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

Question 1 · Square roots

What is the square root of 121?

  1. A. 12
  2. B. 22
  3. C. 13
  4. D. 11 ✓

Answer: 11. 11 × 11 = 121, so √121 = 11.

Question 2 · Exponents

What is 3^3 × 3^2?

  1. A. 729
  2. B. 81
  3. C. 243 ✓
  4. D. 15

Answer: 243. When you multiply powers of the same base, add the exponents: 3^5 = 243.

Question 3 · Triangle area

A triangle has a base of 28 cm and a height of 17 cm. What is its area?

  1. A. 476 cm²
  2. B. 952 cm²
  3. C. 238 cm² ✓
  4. D. 45 cm²

Answer: 238 cm². Area = ½ × base × height = ½ × 28 × 17 = 238 cm².

Question 4 · Simple interest

Find the simple interest on ₹2,000 at 12% per year for 4 years.

  1. A. ₹960 ✓
  2. B. ₹96
  3. C. ₹1,160
  4. D. ₹2,960

Answer: ₹960. Simple interest = P × R × T ÷ 100 = 2000 × 12 × 4 ÷ 100 = ₹960.

Question 5 · Linear equations

Solve for x: 4x + 20 = 64

  1. A. 11 ✓
  2. B. 13
  3. C. 10
  4. D. 12

Answer: 11. Subtract 20 from both sides: 4x = 44. Divide by 4: x = 11.

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