Basic Maths and Reasoning MCQs
Percentages, ratios, averages, profit and loss, speed and time, number series and simple logical reasoning, with the working shown for every answer.
4,221 questions. Select an option to check your answer, or open "Show answer". Showing 1–20.
- 1.
What is 15% of 200?
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Answer: C. 30
15/100 × 200 = 30.
- 2.
What is 25% of 480?
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Answer: C. 120
25% is one quarter: 480 ÷ 4 = 120.
- 3.
What is the average of 10, 20, 30, 40 and 50?
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Answer: B. 30
The sum is 150 and there are 5 numbers: 150 ÷ 5 = 30.
- 4.
What is the LCM of 12 and 18?
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Answer: B. 36
12 = 2² × 3 and 18 = 2 × 3². LCM = 2² × 3² = 36.
- 5.
What is the HCF of 24 and 36?
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Answer: C. 12
The largest number that divides both 24 and 36 exactly is 12.
- 6.
What is the square root of 144?
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Answer: B. 12
12 × 12 = 144.
- 7.
What is the value of 2 raised to the power 10?
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Answer: C. 1,024
2¹⁰ = 1,024.
- 8.
What is the simple interest on Rs 5,000 at 10% per annum for 2 years?
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Answer: B. Rs 1,000
SI = P × R × T ÷ 100 = 5,000 × 10 × 2 ÷ 100 = Rs 1,000.
- 9.
What is the compound interest on Rs 5,000 at 10% per annum for 2 years, compounded yearly?
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Answer: C. Rs 1,050
Amount = 5,000 × 1.1 × 1.1 = 6,050, so interest = Rs 1,050.
- 10.
A car travels at 60 km/h. How far does it go in 2.5 hours?
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Answer: C. 150 km
Distance = speed × time = 60 × 2.5 = 150 km.
- 11.
A speed of 72 km/h is equal to:
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Answer: B. 20 m/s
Multiply by 5/18 to convert km/h to m/s: 72 × 5 ÷ 18 = 20 m/s.
- 12.
A bus covers 120 km in 3 hours. What is its average speed?
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Answer: C. 40 km/h
120 ÷ 3 = 40 km/h.
- 13.
If 5 pens cost Rs 75, what do 8 pens cost?
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Answer: C. Rs 120
One pen costs 75 ÷ 5 = Rs 15, so 8 pens cost 8 × 15 = Rs 120.
- 14.
Rs 64 is divided in the ratio 3 : 5. What is the larger share?
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Answer: C. Rs 40
Total parts = 8; one part = 64 ÷ 8 = 8. Larger share = 5 × 8 = Rs 40.
- 15.
A shopkeeper buys an item for Rs 800 and sells it for Rs 1,000. What is the profit percentage?
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Answer: C. 25%
Profit = 200. Profit % = 200 ÷ 800 × 100 = 25%.
- 16.
An item is sold for Rs 900 at a loss of 10%. What was its cost price?
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Answer: C. Rs 1,000
Selling price = 90% of cost, so cost = 900 ÷ 0.9 = Rs 1,000.
- 17.
What comes next in the series 2, 6, 12, 20, 30, ...?
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Answer: C. 42
The differences are 4, 6, 8, 10, so the next difference is 12: 30 + 12 = 42.
- 18.
What comes next in the series 3, 9, 27, 81, ...?
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Answer: C. 243
Each term is multiplied by 3: 81 × 3 = 243.
- 19.
What comes next in the series 1, 4, 9, 16, 25, ...?
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Answer: C. 36
These are the squares 1², 2², 3², 4², 5²; next is 6² = 36.
- 20.
What comes next in the series 5, 10, 20, 40, ...?
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Answer: C. 80
Each term is doubled: 40 × 2 = 80.