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Mathematics MCQs with Answers

Mathematics and quantitative reasoning questions appear in many job and entry tests. Practice arithmetic, algebra, percentages, ratios, averages, profit and loss, and geometry. Attempt timed MCQ tests to improve both your speed and accuracy.

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Q11. A can finish a job in 10 days and B in 15 days. How many days will they take working together?

  1. 7
  2. 25
  3. 8
  4. 6
Show answer and explanation

Correct answer: D. 6

Combined rate = 1/10 + 1/15; time = 150/25.

Q12. Find the simple interest on Rs. 5000 at 6% per annum for 2 years (in Rs.).

  1. 1200
  2. 600
  3. 500
  4. 700
Show answer and explanation

Correct answer: B. 600

SI = PRT/100 = 5000 x 6 x 2/100 = 600.

Q13. If 6 pens cost Rs. 120, what is the cost of 1 pen (in Rs.)?

  1. 15
  2. 25
  3. 40
  4. 20
Show answer and explanation

Correct answer: D. 20

120/6 = 20.

Q14. A bus covers 120 km in 4 hours. What is its average speed in km/h?

  1. 25
  2. 40
  3. 30
  4. 35
Show answer and explanation

Correct answer: C. 30

Speed = 120/4 = 30 km/h.

Q15. What is the LCM of 28 and 24?

  1. 172
  2. 336
  3. 168
  4. 164
Show answer and explanation

Correct answer: C. 168

LCM = (x*y)/HCF = 672/4 = 168.

Q16. What is the sum of interior angles of a polygon with 6 sides?

  1. 1080 degrees
  2. 900 degrees
  3. 720 degrees
  4. 810 degrees
Show answer and explanation

Correct answer: C. 720 degrees

Sum = (n-2) x 180 = 720.

Q17. In a right-angled triangle, the two legs are 9 cm and 12 cm. Find the hypotenuse (in cm).

  1. 21
  2. 15
  3. 14
  4. 16
Show answer and explanation

Correct answer: B. 15

Hypotenuse = sqrt(9^2+12^2) = 15.

Q18. Find the compound interest on Rs. 2000 at 20% per annum for 2 years, compounded annually (in Rs.).

  1. 800
  2. 830
  3. 930
  4. 880
Show answer and explanation

Correct answer: D. 880

A = P(1+R/100)^2; CI = 880.

Q19. A number 500 is increased by 25%. What is the new number?

  1. 615
  2. 525
  3. 635
  4. 625
Show answer and explanation

Correct answer: D. 625

500 x (100+25)/100 = 625.

Q20. What is 91 x 17?

  1. 1547
  2. 1537
  3. 1587
  4. 1507
Show answer and explanation

Correct answer: A. 1547

91 x 17 = 1547.

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