Question

I am a prime number greater than 11 and less than
31. The sum of my digits is also a 1-digit prime
number. What number am I?​

Answer 1

Answer:

You are surely 23.

Step-by-step explanation:

The prime numbers between 11 and 31 are:

13,17,19,23,29.

so,1+3=4,not a prime number

1+7=8,not a prime number

1+9=10,2 digit and not a prime number

2+3=5,1 digit and a prime number

2+9=11, 2 digit number.

so,you are 23....