Question

Which value of n makes the value of the expression 4n+3 a composite number is it A-1 B-2 C-3 or D-4

Answer 1

I'm pretty sure that the answer is C:3

Answer 2

C )For n = 3 the expression 4n+ 3 is composite number.

Explanation:

Given : 4n + 3.

To find: Which value of n makes the value of the expression 4n+3 a composite number is it.

Solution : We have given 4n + 3.

Composite number : A composite number is a positive integer which is not prime (i.e., which has factors other than 1 and itself).

For, n = 3

4 (3) + 3

12 + 3

15 .

We can see 15 is not a prime number . it has factor 3 , 5, 15 .

So, For n = 3 the expression 4n+ 3 is composite number.

Therefore, C )For n = 3 the expression 4n+ 3 is composite number.