Question 848287
Here is the list of single digit prime numbers


2, 3, 5, 7


Through trial and error, you will eventually get that 2+5+7 = 7+7 = 14


Notice how 1+4 = 5


So the answer is <font size = 4 color="red">14</font> (adding the primes 2, 5, 7 to get it)