PRIME AND COMPOSITE NUMBERS
5) If a and b are two prime numbers, then, a + b can take value :-
1. 78
2. 7
3. 23
Options :
a} 1 Only
b} 2 Only
3} 1 & 2 only
4} 2 & 3 Only
ans- C
'coz 78 is even no.s thus it shud b sum of 2 odd prime no.s i.e 37 n 41
7 is odd no.s thus shud b sum of 1...