x + y = 39
x - y = 11
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2x = 50
x = 25
y = 14
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9 and 11
Two prime numbers such that their sum is 22:- i) 19 and 3 ii) 17 and 5 If we don't consider the prime numbers to be distinct then 11 and 11 is also a solution.
13 and 5 11 and 7
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
The sum of any two prime numbers is not always a composite number. The sum of 2 and 11 is 13, and 13 is a prime number, not a composite number.