defence exam SSB Head Constable (Communication) 2023 Mock Test Quantitative Aptitude Number System Integers
If ‘a’ and ‘b’ are two positive integers such that the least prime factor of ‘a’ is 5 and the least prime factor of ‘b’ is 7, then the least prime factor of (a + b) is:
1
7
2
12
3
2
4
5