I am a 3 digit odd prime number.

First digit, is the only even prime number.

Third digit, is the first odd prime number.

Sum of all three digits is 7.

Who am I??

Recall what prime numbers are and use basic arithmetic to solve this question!

Hint!

SOLUTION!

Solution:

223!

The given number is a 3 digit odd prime number.

It is given that the first digit is the only even prime number and the third digit is the first odd prime number, which are 2 and 3 respectively.

Also given, the sum of all the three digits is equal to 7.

Let the unknown second digit be x.

Therefore, 2+x+3=7

and x=2

So the required 3 digit number is 223.