Question

_______is the only prime number which can be expressed as the sum as well as the difference of two prime numbers
a) 7
b) 9
c) 3
d) 5​

Answer 1

5

Step-by-step explanation: There is only one prime number that can be written both as the sum of two primes and the difference of two primes. Find that number and prove that it is the only one. I've been thinking it could be 5? Since 2+3=5 and 7−2=5.

Answer 2

Answer:

5 is the only prime number which can be expressed as the sum as well as the difference of two prime numbers.

Eg: 2 + 3 = 5

7 - 2 = 5