Highest Common Factor And Least Common Multiple MCQ Set 1

Showing question 1 to 5 of total 54 MCQs

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Question No: 1

Greatest Common Divisor of two numbers is 8 while their Least Common Multiple is 144. Find the other number if one number is 16.

1. 108
2. 96
3. 72
4. 36

Answer: C

Explanation

16 ×? = 8 × 144

? = 72

Question No: 2

LCM of two numbers is 138. But their GCD is 23. The numbers are in a ratio 1:6. Which is the largest number amongst the two?

1. 46
2. 138
3. 69
4. 23

Question No: 3

The least common multiple of two numbers is 168 and highest common factor of them is 12. If the difference between the numbers is 60, what is the sum of the numbers?

1. 108
2. 96
3. 122
4. 144

Question No: 4

If least common multiple of two numbers is 225 and the highest common factor is 5 then find the numbers when one of the numbers is 25?

1. 75
2. 65
3. 15
4. 45

Question No: 5

The sum of two numbers is 156 and their HCF is 13. The numbers of such number pairs is

1. 2
2. 5
3. 4
4. 3

Answer: A

Explanation

The solution might look difficult but it is very easy to understand and solve

just observe the image carefully