Question

3.
Which number is the prime number?
a. 57
b. 67
c. 27​

Answer 1

67 is the prime number

it can't divisible by any of the number

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Answer 2

Answer:

b. 67

As factors of (a)57 are 1, 3, 19 and 57.

And factors of (c)27 are 1, 3, 9 and 27.

But (b)67 has only two factor i.e. 1 and 67, hence it is a prime number.