Math MCQ Questions with answers

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Here Important Math MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping Share button.

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Q. In an election between two candidates, one secures 58% of the valid votes and wins by 2,400 votes. The total number of valid votes is:

  • (A) 24,000
  • (B) 20,000
  • (C) 18,000
  • (D) 15,000
📝 Notes
✅ Correct Answer: (D) 15,000
Explanation: Winning margin = 58% − 42% = 16%. Therefore, total valid votes = 2400 × 100 / 16 = 15,000.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 03:57 pm in Math

Q. If 15% of a number is 54, the number is:

  • (A) 320
  • (B) 340
  • (C) 360
  • (D) 380
📝 Notes
✅ Correct Answer: (C) 360
Explanation: Number = (54 × 100) / 15 = 360.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. A number is increased by 30% and then decreased by 10%. The net percentage change is:

  • (A) 17% increase
  • (B) 18% increase
  • (C) 20% increase
  • (D) 22% increase
📝 Notes
✅ Correct Answer: (A) 17% increase
Explanation: Net change = 30 - 10 - (30 × 10)/100 = 17% increase.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. The price of an article is increased by 10% and then by another 20%. The total increase is:

  • (A) 30%
  • (B) 31%
  • (C) 32%
  • (D) 33%
📝 Notes
✅ Correct Answer: (C) 32%
Explanation: Overall increase = 10 + 20 + (10 × 20)/100 = 32%.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. If A's salary is 25% more than B's salary, then B's salary is what percent less than A's salary?

  • (A) 18%
  • (B) 20%
  • (C) 22%
  • (D) 25%
📝 Notes
✅ Correct Answer: (B) 20%
Explanation: Let B = 100, A = 125. Difference = 25. Percentage less = (25/125) × 100 = 20%.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. The population of a village increases by 12% every year. The approximate percentage increase after two years is:

  • (A) 24%
  • (B) 25.44%
  • (C) 26%
  • (D) 28%
📝 Notes
✅ Correct Answer: (B) 25.44%
Explanation: Overall increase = 12 + 12 + (12 × 12)/100 = 25.44%.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. A candidate gets 420 marks out of 600. His percentage is:

  • (A) 65%
  • (B) 68%
  • (C) 70%
  • (D) 72%
📝 Notes
✅ Correct Answer: (C) 70%
Explanation: Percentage = (420/600) × 100 = 70%.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. The value of a machine depreciates by 25%. If its present value is ₹48,000, its value after depreciation is:

  • (A) ₹34,000
  • (B) ₹35,000
  • (C) ₹36,000
  • (D) ₹38,000
📝 Notes
✅ Correct Answer: (C) ₹36,000
Explanation: Value = 48000 × 75/100 = ₹36,000.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. If 35% of a number is equal to 84, then the number is:

  • (A) 220
  • (B) 240
  • (C) 260
  • (D) 280
📝 Notes
✅ Correct Answer: (B) 240
Explanation: Number = (84 × 100)/35 = 240.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

Q. A number is decreased by 40% and then increased by 50%. The final value is what percent of the original?

  • (A) 85%
  • (B) 90%
  • (C) 95%
  • (D) 100%
📝 Notes
✅ Correct Answer: (B) 90%
Explanation: Assume the number is 100. After a 40% decrease it becomes 60. Increasing 60 by 50% gives 90.

Published by Mr. Dubey ⭐ 109.86K Points at 25-Jul-2026 04:21 pm in Math

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