Let the other number be a.
We know that,
(HCF of the two numbers) x (LCM of the two numbers)= Product of Two numbers
Now, 7×84=21×a
588=21a
Which on dividing both sides by 21 ,
We get, a=28
The other number is 28 .
Question : The LCM of the two numbers is 840 and their HCF is 7. If one of the numbers is 56, find the other.
Option 1: 120
Option 2: 112
Option 3: 105
Option 4: 84
Question : The LCM of the two numbers is 44 times their HCF. The sum of the LCM and HCF is 1125. If one number is 25, then the other number is:
Option 1: 1100
Option 2: 975
Option 3: 900
Option 4: 800
Question : The HCF of the two numbers is 21 and their LCM is 840. If one of the numbers is 49, then the other number is:
Option 1: 650
Option 2: 540
Option 3: 810
Option 4: 360
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
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