Basic Maths and Reasoning MCQs (page 41 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 801–820.
- 801.
What is the LCM of 18 and 20?
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Answer: C. 180
The lowest common multiple of 18 and 20 is 180. Check: LCM × HCF = 180 × 2 = 360 = 18 × 20.
- 802.
What is the HCF of 21 and 28?
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Answer: C. 7
The highest number dividing both 21 and 28 exactly is 7.
- 803.
What is the HCF of 24 and 54?
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Answer: C. 6
The highest number dividing both 24 and 54 exactly is 6.
- 804.
What is the LCM of 26 and 51?
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Answer: C. 1,326
The lowest common multiple of 26 and 51 is 1326. Check: LCM × HCF = 1326 × 1 = 1326 = 26 × 51.
- 805.
What is the HCF of 39 and 45?
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Answer: B. 3
The highest number dividing both 39 and 45 exactly is 3.
- 806.
What is the LCM of 48 and 57?
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Answer: B. 912
The lowest common multiple of 48 and 57 is 912. Check: LCM × HCF = 912 × 3 = 2736 = 48 × 57.
- 807.
What is the HCF of 36 and 37?
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Answer: A. 1
The highest number dividing both 36 and 37 exactly is 1.
- 808.
What is the LCM of 22 and 47?
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Answer: C. 1,034
The lowest common multiple of 22 and 47 is 1034. Check: LCM × HCF = 1034 × 1 = 1034 = 22 × 47.
- 809.
What is the LCM of 8 and 30?
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Answer: C. 120
The lowest common multiple of 8 and 30 is 120. Check: LCM × HCF = 120 × 2 = 240 = 8 × 30.
- 810.
What is the HCF of 37 and 45?
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Answer: A. 1
The highest number dividing both 37 and 45 exactly is 1.
- 811.
What is the HCF of 5 and 40?
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Answer: B. 5
The highest number dividing both 5 and 40 exactly is 5.
- 812.
What is the LCM of 11 and 26?
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Answer: B. 286
The lowest common multiple of 11 and 26 is 286. Check: LCM × HCF = 286 × 1 = 286 = 11 × 26.
- 813.
What is the LCM of 21 and 58?
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Answer: B. 1,218
The lowest common multiple of 21 and 58 is 1218. Check: LCM × HCF = 1218 × 1 = 1218 = 21 × 58.
- 814.
What is the LCM of 41 and 45?
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Answer: C. 1,845
The lowest common multiple of 41 and 45 is 1845. Check: LCM × HCF = 1845 × 1 = 1845 = 41 × 45.
- 815.
What is the HCF of 59 and 60?
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Answer: A. 1
The highest number dividing both 59 and 60 exactly is 1.
- 816.
What is the HCF of 27 and 55?
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Answer: A. 1
The highest number dividing both 27 and 55 exactly is 1.
- 817.
What is the LCM of 15 and 35?
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Answer: B. 105
The lowest common multiple of 15 and 35 is 105. Check: LCM × HCF = 105 × 5 = 525 = 15 × 35.
- 818.
What is the LCM of 33 and 50?
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Answer: B. 1,650
The lowest common multiple of 33 and 50 is 1650. Check: LCM × HCF = 1650 × 1 = 1650 = 33 × 50.
- 819.
What is the LCM of 30 and 60?
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Answer: B. 60
The lowest common multiple of 30 and 60 is 60. Check: LCM × HCF = 60 × 30 = 1800 = 30 × 60.
- 820.
What is the LCM of 7 and 40?
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Answer: C. 280
The lowest common multiple of 7 and 40 is 280. Check: LCM × HCF = 280 × 1 = 280 = 7 × 40.