Basic Maths and Reasoning MCQs (page 33 of 212)

Percentages, ratios, averages, profit and loss, speed and time, number series and simple logical reasoning, with the working shown for every answer.

Practise 10 questions Timed test

4,221 questions. Select an option to check your answer, or open "Show answer". Showing 641–660.

641.
What is the LCM of 9 and 26?
Show answer
Answer: B. 234
The lowest common multiple of 9 and 26 is 234. Check: LCM × HCF = 234 × 1 = 234 = 9 × 26.
642.
What is the HCF of 11 and 23?
Show answer
Answer: A. 1
The highest number dividing both 11 and 23 exactly is 1.
643.
What is the HCF of 21 and 55?
Show answer
Answer: A. 1
The highest number dividing both 21 and 55 exactly is 1.
644.
What is the LCM of 13 and 17?
Show answer
Answer: B. 221
The lowest common multiple of 13 and 17 is 221. Check: LCM × HCF = 221 × 1 = 221 = 13 × 17.
645.
What is the LCM of 13 and 26?
Show answer
Answer: C. 26
The lowest common multiple of 13 and 26 is 26. Check: LCM × HCF = 26 × 13 = 338 = 13 × 26.
646.
What is the LCM of 4 and 57?
Show answer
Answer: C. 228
The lowest common multiple of 4 and 57 is 228. Check: LCM × HCF = 228 × 1 = 228 = 4 × 57.
647.
What is the LCM of 18 and 19?
Show answer
Answer: B. 342
The lowest common multiple of 18 and 19 is 342. Check: LCM × HCF = 342 × 1 = 342 = 18 × 19.
648.
What is the HCF of 50 and 54?
Show answer
Answer: B. 2
The highest number dividing both 50 and 54 exactly is 2.
649.
What is the LCM of 28 and 51?
Show answer
Answer: C. 1,428
The lowest common multiple of 28 and 51 is 1428. Check: LCM × HCF = 1428 × 1 = 1428 = 28 × 51.
650.
What is the LCM of 13 and 44?
Show answer
Answer: C. 572
The lowest common multiple of 13 and 44 is 572. Check: LCM × HCF = 572 × 1 = 572 = 13 × 44.
651.
What is the HCF of 25 and 43?
Show answer
Answer: A. 1
The highest number dividing both 25 and 43 exactly is 1.
652.
What is the LCM of 16 and 40?
Show answer
Answer: C. 80
The lowest common multiple of 16 and 40 is 80. Check: LCM × HCF = 80 × 8 = 640 = 16 × 40.
653.
What is the HCF of 7 and 37?
Show answer
Answer: A. 1
The highest number dividing both 7 and 37 exactly is 1.
654.
What is the LCM of 38 and 46?
Show answer
Answer: B. 874
The lowest common multiple of 38 and 46 is 874. Check: LCM × HCF = 874 × 2 = 1748 = 38 × 46.
655.
What is the LCM of 23 and 27?
Show answer
Answer: B. 621
The lowest common multiple of 23 and 27 is 621. Check: LCM × HCF = 621 × 1 = 621 = 23 × 27.
656.
What is the LCM of 17 and 23?
Show answer
Answer: B. 391
The lowest common multiple of 17 and 23 is 391. Check: LCM × HCF = 391 × 1 = 391 = 17 × 23.
657.
What is the HCF of 31 and 40?
Show answer
Answer: A. 1
The highest number dividing both 31 and 40 exactly is 1.
658.
What is the HCF of 48 and 56?
Show answer
Answer: B. 8
The highest number dividing both 48 and 56 exactly is 8.
659.
What is the LCM of 38 and 55?
Show answer
Answer: C. 2,090
The lowest common multiple of 38 and 55 is 2090. Check: LCM × HCF = 2090 × 1 = 2090 = 38 × 55.
660.
What is the HCF of 14 and 33?
Show answer
Answer: A. 1
The highest number dividing both 14 and 33 exactly is 1.