Question

if x and y are distinct prime numbers less than 10 which of the following cannot be a sum of x and y??? 5, 6 , 7 , 8

Answer 1

Prime numbers less than 10 are : 2, 3, 5, and 7
x and y are distinct
if x=2 and y=3 -> x+y=5
if x=2 and y=5 -> x+y=7
if x=3 and y=5 -> x+y=8
if x=7 and y=2 -> x+y=9 > 8
So 6 can not be a sum of x and y.

Answer 2

oh ok thank you :)

Answer 3

you're welcome