Question : What is the product of the two numbers whose HCF is 7 and LCM is 280?
Option 1: 1980
Option 2: 980
Option 3: 3920
Option 4: 1960
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Correct Answer: 1960
Solution : The product of two numbers is equal to the product of their highest common factor (HCF) and least common multiple (LCM). So, if the HCF is 7 and the LCM is 280. The product of the two numbers = 7 × 280 = 1960 Hence, the correct answer is 1960.
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Question : The ratio of the LCM of two numbers to the sum of the same two numbers is 12 : 7. If their HCF is 4, what is the product of these two numbers?
Option 1: 192
Option 2: 172
Option 3: 196
Option 4: 169
Question : The product of the two numbers is 6552 and their HCF is 6. What is the LCM of those numbers?
Option 1: 1024
Option 2: 1224
Option 3: 1084
Option 4: 1092
Question : If LCM of two numbers is 72 and their product is 1728 , then what is the HCF of the numbers?
Option 1: 1
Option 2: 18
Option 3: 24
Option 4: 12
Question : The LCM of the two numbers is 4 times their HCF. The sum of LCM and HCF is 125. If one of the numbers is 100, then the other number is:
Option 1: 5
Option 2: 25
Option 3: 100
Option 4: 125
Question : The product of LCM and HCF of two numbers is 2028. If one number is 78, then what is the other number?
Option 1: 13
Option 2: 52
Option 3: 26
Option 4: 39
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