Start learning →

CA Foundation Quantitative Aptitude — practice by topic

Browse 1,234 questions across 32 Quantitative Aptitude topics. Choose what you want to revise, then open a question to check its answer and worked solution.

Start learning CA Foundation with Quill →

Quantitative Aptitude topics

Quantitative Methods (93)Time Value of Money (93)Correlation and Regression (84)Ratio and Proportion, Indices and Logarithms (74)Sets, Relations and Functions (74)Measures of Central Tendency and Dispersion (69)Statistical Representation of Data and Sampling (69)Sequence and Series (68)Number Series, Coding and Decoding (67)Basic Differential and Integral Calculus (65)Theoretical Distributions (64)Index Numbers (63)Seating Arrangements (63)Probability (57)Permutations and Combinations (56)Quadratic Equation (52)Direction Tests (44)Linear Inequalities (42)Blood Relations (39)Ratio, Proportion, Indices and Logarithms (35)Basic Arithmetic (34)Mathematics of Finance (31)Compound Interest (30)Number Series (21)Analogies (20)Classification (20)Number Series, Coding and Decoding and Odd Man Out (20)Interest (2)Ratio (2)Logical Reasoning (1)Profit And Interest (1)Sequences (1)

Try a Quantitative Aptitude question

The sub-duplicate ratio of 25 : 36 isRead the answer and worked solution →The triplicate ratio of 2 : 3 isRead the answer and worked solution →The sub-triplicate ratio of 8 : 27 isRead the answer and worked solution →If the ratio of two quantities is 3 : 4 and the antecedent is 15, the consequent isRead the answer and worked solution →

Worked practice questions

The sub-duplicate ratio of 25 : 36 is

  1. 5 : 6
  2. 50 : 72
  3. 6 : 5
  4. 36 : 25
Show answer and solution

Correct answer: A. 5 : 6

1. The sub-duplicate ratio of a : b is sqrt(a) : sqrt(b). 2. sqrt(25) = 5 and sqrt(36) = 6. 3. So the sub-duplicate ratio of 25 : 36 is 5 : 6. 4. Option C just doubles the original terms and is incorrect. _Source: ICAI BoS Foundation Paper 3, Ch 1 Unit I 'Ratio', p.5 Ex.1(A) Q6_

Open this question →

The triplicate ratio of 2 : 3 is

  1. 3 : 2
  2. 4 : 9
  3. 6 : 9
  4. 8 : 27
Show answer and solution

Correct answer: D. 8 : 27

1. The triplicate ratio of a : b is a^3 : b^3. 2. 2^3 = 8 and 3^3 = 27. 3. So the triplicate ratio of 2 : 3 is 8 : 27. 4. Option D is the DUPLICATE ratio (squared, not cubed) so it is the trap. _Source: ICAI BoS Foundation Paper 3, Ch 1 Unit I 'Ratio', p.5 Ex.1(A) Q7_

Open this question →

The sub-triplicate ratio of 8 : 27 is

  1. 2 : 3
  2. 24 : 81
  3. 4 : 9
  4. 27 : 8
Show answer and solution

Correct answer: A. 2 : 3

1. The sub-triplicate ratio of a : b is cuberoot(a) : cuberoot(b). 2. cuberoot(8) = 2 and cuberoot(27) = 3. 3. So the sub-triplicate ratio of 8 : 27 is 2 : 3. 4. Option B is the inverse, option C is a factored form, both wrong. _Source: ICAI BoS Foundation Paper 3, Ch 1 Unit I 'Ratio', p.5 Ex.1(A) Q8_

Open this question →

How to practise

  1. Choose a Quantitative Aptitude question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.