Question

What is the sum of one digit prime numbers?
A. 11
B. 13
C. 15
D. 17

Answer 1

2+3+5+7=17
Therefore option D is correct

Answer 2

Answer:

the sum of one digit prime numbers = 7

Step-by-step explanation:

Prime numbers are the natural numbers > 1 which does not have any natural number factor other than the number itself & 1

So one digit prime numbers would be 2 , 3 , 5 & 7

2 = 2 * 1

3 = 3 *1

5 = 5 * 1

7 = 7 * 1

while 4 , 6 , 8 & 9 are not prime numbers as

4 = 2 * 2   & 4 * 1

6 = 2 * 3  &  6 *1

8 = 2 * 4   &  2 * 2 * 2  & 1 *8

9 = 3 * 3  &  9 * 1

Sum of one digit prime numbers = 2 + 3 + 5 + 7 = 17

Option D is correct