Basic Maths and Reasoning MCQs (page 44 of 212)
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 861–880.
- 861.
What is the square of 19?
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Answer: C. 361
19 × 19 = 361.
- 862.
What is the square root of 361?
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Answer: C. 19
19 × 19 = 361, so √361 = 19.
- 863.
What is the square of 20?
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Answer: B. 400
20 × 20 = 400.
- 864.
What is the square of 21?
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Answer: B. 441
21 × 21 = 441.
- 865.
What is the square root of 441?
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Answer: C. 21
21 × 21 = 441, so √441 = 21.
- 866.
What is the square of 22?
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Answer: B. 484
22 × 22 = 484.
- 867.
What is the square root of 484?
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Answer: C. 22
22 × 22 = 484, so √484 = 22.
- 868.
What is the square of 23?
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Answer: B. 529
23 × 23 = 529.
- 869.
What is the square root of 576?
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Answer: B. 24
24 × 24 = 576, so √576 = 24.
- 870.
What is the square of 25?
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Answer: C. 625
25 × 25 = 625.
- 871.
What is the square root of 625?
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Answer: A. 25
25 × 25 = 625, so √625 = 25.
- 872.
What is the square of 26?
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Answer: C. 676
26 × 26 = 676.
- 873.
What is the square root of 676?
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Answer: C. 26
26 × 26 = 676, so √676 = 26.
- 874.
What is the square of 27?
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Answer: C. 729
27 × 27 = 729.
- 875.
What is the square root of 729?
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Answer: B. 27
27 × 27 = 729, so √729 = 27.
- 876.
What is the square root of 784?
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Answer: B. 28
28 × 28 = 784, so √784 = 28.
- 877.
What is the square of 29?
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Answer: B. 841
29 × 29 = 841.
- 878.
What is the square root of 841?
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Answer: C. 29
29 × 29 = 841, so √841 = 29.
- 879.
What is the square of 30?
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Answer: C. 900
30 × 30 = 900.
- 880.
What is the square root of 900?
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Answer: C. 30
30 × 30 = 900, so √900 = 30.