Which number is prime? Choices: (A)15 (B)1 (C)7 (D)8

Check Prime Number 15: Step 1: Check if 15 is a prime number. 15 is divisible by 3 and 5, so it is not a prime number. Check Prime Number 1: Step 2: Check if 1 is a prime number. 1 is not considered a prime number because it has only one divisor, itself. Check Prime Number 7: Step 3: Check if 7 is a prime number. 7 is only divisible by 1 and 7, making it a prime number. Check Prime Number 8: Step 4: Check if 8 is a prime number. 8 is divisible by 2, 4, and 8, so it is not a prime number.

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Which number is prime? $\newline$ Choices: $\newline$ (A) $15$ $\newline$ (B) $1$ $\newline$ (C) $7$ $\newline$ (D) $8$

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Q. Which number is prime?

\newline

Choices:

\newline

(A)

15

\newline

(B)

1

\newline

(C)

7

\newline

(D)

8

Check Prime Number $15$ : Step $1$ : Check if $15$ is a prime number. $15$ is divisible by $3$ and $5$ , so it is not a prime number.
Check Prime Number $1$ : Step $2$ : Check if $1$ is a prime number. $1$ is not considered a prime number because it has only one divisor, itself.
Check Prime Number $7$ : Step $3$ : Check if $7$ is a prime number. $7$ is only divisible by $1$ and $7$ , making it a prime number.
Check Prime Number $8$ : Step $4$ : Check if $8$ is a prime number. $8$ is divisible by $2$ , $4$ , and $8$ , so it is not a prime number.