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Q.

What is the HCF of the smallest composite number and the smallest prime number?

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a

1

b

2

c

5

d

3 

answer is A.

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Detailed Solution

We have to find the HCF of the smallest composite number and the smallest prime number.
The smallest composite number is 4.
⇒ The common factors of 4=2×2×1
The smallest Prime number is 2.
⇒ The common factors of 2=2×1
Therefore,
HCF(4,2)=2×1
⇒HCF(4,2)=2
Therefore, the HCF of the smallest composite number and the smallest prime number is 2.
Hence, option 2 is correct.
 
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