Mathematics - MOST IMPORTANT SSC CGL Previous Year Questions
Practice real questions from previous year exams of SSC CGL.
📘 Basic Percentage Calculations📚 Find X Percent of a Given Number
Q1
By how much is 60% of 75 greater than 20% of 25?
🎯 SSC CGL TIER-II (18/01/2025)
📘 Percentage Change in Fractions📚 Numerator and Denominator Both Changed Find Original Fraction
Q2
By mistake, the reciprocal of a positive fraction got typed in place of itself, and thereby its value got reduced by 175/4%. What was the value of the fraction?
🎯 SSC CGL 24/08/2021 (Shift-03)
📘 Successive Percentage Change📚 Percent Change Needed to Restore Original
Q3
A value is increased by 30% and then decreased by an unknown percentage to return to the original value. What is the percentage decrease required?
🎯 SSC CGL 23/09/2025 (Shift-02)
📘 Percentage Change in Geometry📚 Percentage Change in 2D Area — Square, Rectangle, Triangle, Circle
Q4
A circular disc's radius is decreased by 10%. What is the percentage decrease in its area?
🎯 SSC CGL 12/09/2025 (Shift-03)
📘 Percentage Change in Geometry📚 Percentage Change in 2D Area — Square, Rectangle, Triangle, Circle
Q5
The length and breadth of a rectangle are increased by 8% and 5%, respectively. By how much percentage will the area of the rectangle increase?
🎯 SSC CGL 01/12/2022 (Shift-01)
📘 Percentage Change in Geometry📚 Percentage Change in 3D Volume — Cuboid, Cylinder, Sphere, Hemisphere
Q6
If all three dimensions of a cuboid are increased by 10%, the volume increases by what percentage?
🎯 SSC CGL 18/09/2025 (SHIFT-02)
📘 Percentage Change in Geometry📚 Compensatory Dimensional Change to Keep Area or Volume Constant
Q7
The base of a triangle is increased by 40%. By what percentage should its height be increased so that the area increases by 60%?
🎯 SSC CGL 13/04/2022 (Shift-03)
📘 Percentage Change in Geometry📚 Percentage Change in 3D Volume — Cuboid, Cylinder, Sphere, Hemisphere
Q8
The length and breadth of a cuboid are increased by 20% and 25%, while height is reduced by 30%. What is the total percentage change in volume?
🎯 SSC CGL 07/12/2022 (Shift-03)
📘 Successive Percentage Change📚 Two Successive Increases Net Effect
Q9
Ravi's salary was increased by 50%. After some time, his new salary was also increased by 50%. Find his gain percentage of salary.
🎯 SSC CGL 10/09/2024 (Shift-02)
📘 Percentage Comparison More or Less📚 A is What Percent More than B
Q10
A number was mistakenly increased by 25% instead of decreased by 20%. By what percent is the final result more than the correct value?
🎯 SSC CGL 21/09/2025 (Shift-03)
📘 Successive Percentage Change📚 Increase Followed by Decrease Net Effect
Q11
In a company, all employees are getting equal wages. If the number of employees is increased by 20% and their wages per head are decreased by 18%, what is the percentage decrease in total wages?
🎯 SSC CGL 17/09/2024 (Shift-01)
📘 Successive Percentage Change📚 Increase Followed by Decrease Net Effect
Q12
The price of a car is first increased by 35% and then decreased by 25%. What is the net percentage change?
🎯 SSC CGL 01/12/2022 (Shift-02)
📘 Successive Percentage Change📚 Two Successive Decreases Net Effect
Q13
Two successive percentage decreases of 25% each is by what percentage less than two successive percentage increases of 25% each?
🎯 SSC CGL 26/09/2024 (Shift-01)
📘 Successive Percentage Change📚 Three or More Successive Changes Net Effect
Q14
An investor invested 2,00,000 in shares. The shares rose by 18% on day 1, fell by 15% on day 2, and fell by 3% on day 3. What is the net percentage change?
🎯 SSC CGL 18/09/2024 (Shift-03)
📘 Price Consumption and Expenditure📚 Price Increase Reduce Consumption Same Expenditure
Q15
If the price of petrol increased by 7%, then by what percentage should the consumption be decreased if the expenditure remains unchanged?
🎯 SSC CGL 19/07/2023 (Shift-04)
📘 Price Consumption and Expenditure📚 Price and Consumption Both Changed Net Effect on Expenditure
Q16
When the price of an item was reduced by 20%, its sale increased by x%. If there is an increase of 25% in receipt of revenue, then x is:
🎯 SSC CGL TIER II 29/01/2022
📘 Income Expenditure and Savings📚 Basic Relationship Between Income Expenditure and Savings
Q17
The income of A is 80% of B's income and the expenditure of A is 60% of B's expenditure. If the income of A is equal to 90% of B's expenditure, then by what percentage are the savings of A more than B's savings?
🎯 SSC CGL TIER II 29/01/2022
📘 Successive Percentage Change📚 Three or More Successive Changes Net Effect
Q18
A number is first increased by 12% and then increased by 23%. The number is now decreased by 34%. What is the net increase or decrease percent?
🎯 SSC CGL 09/09/2024 (Shift-03)
📘 Population Growth and Decline📚 Constant Annual Decline Rate Find Future Population
Q19
Two years ago, the population of a town was 94,87,500. It decreases every year at 8%. The present population is:
🎯 SSC CGL TIER-II (20/01/2025)
📘 Reverse Percentage📚 Finding Original Value After Multiple Successive Changes
Q20
Amit gets 6% increase in sale in the first year and 20% in the second year. His present sale is 2,54,400. What was his sale two years ago?
🎯 SSC CGL TIER-II (20/01/2025)