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Q.

What is (HCF×LCM) of 87 and 145?


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a

11343

b

12345

c

12617

d

12615 

answer is D.

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Detailed Solution

The given numbers are 87 and 145.
We know that,
The formula which involves both HCF and LCM is:
(HCF of the two numbers) × (LCM of the two numbers) = Product of Two numbers  If ‘a’ and ‘b’ be two numbers, then we have,
a×b=HCF×LCM Here, we have a = 87 and b = 145.
⇒HCF×LCM=87×145 =12615 Hence, (HCF×LCM) of 87 and 145 is 12615.
So, option (4) is correct.
 
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