Query Detail : RBI Grade B Phase I

If HCF of two numbers is 5 and their product is 2500 then how many possible solutions are there of these type of numbers Correct Answer : 2
Garima,   October 24th 2019,  
RBI Grade B Phase I


Let numbers be 5x and 5y 

So 5x*5y = 2500

x*y = 100

So co-prime pairs of x and y are (1,100) & (4,25)

Hence there are 2 possible solution.