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Mathematical Aptitude MCQs and mock tests

60 distinct Mathematical Aptitude questions are in live Law Maker papers, used across 5 exams. Each comes with the answer and an explanation once you submit.

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Mathematical Aptitude practice sets

2 sets, 1 free.

Exams with Mathematical Aptitude questions

Sample Mathematical Aptitude questions

From free papers. Try each one before you open the answer.

  1. Question 1 · Mathematical Aptitude Practice Set 1

    If A : B = 2 : 3 and B : C = 4 : 5, then A : B : C is:

    1. A. 6 : 12 : 15
    2. B. 2 : 3 : 5
    3. C. 8 : 12 : 10
    4. D. 8 : 12 : 15
    Show the answer

    D. 8 : 12 : 15

    Make B common: A : B = 8 : 12 and B : C = 12 : 15, so A : B : C = 8 : 12 : 15.

  2. Question 2 · Mathematical Aptitude Practice Set 1

    Two numbers are in the ratio 3 : 5. If 6 is subtracted from each, the ratio becomes 6 : 11. What is the smaller number?

    1. A. 36
    2. B. 24
    3. C. 30
    4. D. 18
    Show the answer

    C. 30

    Let the numbers be 3k and 5k. (3k - 6)/(5k - 6) = 6/11 gives 33k - 66 = 30k - 36, so k = 10 and the smaller number is 30.

  3. Question 3 · Mathematical Aptitude Practice Set 1

    The present ages of A and B are in the ratio 4 : 5. After 6 years the ratio will be 5 : 6. What is A's present age?

    1. A. 30 years
    2. B. 28 years
    3. C. 24 years
    4. D. 20 years
    Show the answer

    C. 24 years

    (4k + 6)/(5k + 6) = 5/6 gives 24k + 36 = 25k + 30, so k = 6. A's present age = 4 x 6 = 24 years.

  4. Question 4 · Mathematical Aptitude Practice Set 1

    What is the simple interest on Rs. 5,000 at 8% per annum for 3 years?

    1. A. Rs. 1,400
    2. B. Rs. 1,200
    3. C. Rs. 1,000
    4. D. Rs. 1,298.56
    Show the answer

    B. Rs. 1,200

    SI = P x R x T/100 = 5,000 x 8 x 3/100 = Rs. 1,200. Rs. 1,298.56 would be the compound interest.

  5. Question 5 · Mathematical Aptitude Practice Set 1

    The monthly incomes of A and B are in the ratio 7 : 5 and their monthly expenditures are in the ratio 3 : 2. If each of them saves Rs. 2,000 a month, what is B's monthly income?

    1. A. Rs. 8,000
    2. B. Rs. 14,000
    3. C. Rs. 10,000
    4. D. Rs. 12,000
    Show the answer

    C. Rs. 10,000

    Let incomes be 7x and 5x and expenditures 3y and 2y. 7x - 3y = 2,000 and 5x - 2y = 2,000 give x = 2,000 and y = 4,000, so B's income is 5 x 2,000 = Rs. 10,000 (B spends Rs. 8,000).