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Q.

Is it true that 28 is a perfect number?


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a

True

b

False 

answer is A.

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Detailed Solution

It is given 28 is a perfect number.
According to the rule,
A Perfect Number is defined as any positive integer where the sum of its divisors minus the number itself equals the number.
The proper divisors of 28 are ,2,4,7,14.
As,their sum 1+2+4+7+14=28.
Therefore, 28 is a perfect number is true.
Hence, the correct option is 1.
 
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