A) 3
B) 5
C) 7
D) None of these
Correct Answer: C
Solution :
Suppose, the numbers are x and y, then by question, \[x\times y=120\] and \[{{x}^{2}}+{{y}^{2}}=289\] As we know, \[{{(x-y)}^{2}}={{x}^{2}}+{{y}^{2}}-2xy\] \[=({{x}^{2}}+{{y}^{2}})-2xy=289-2\times 120\] \[=289-240=49={{7}^{2}}\] \[\therefore \] \[x-y=7\]
You need to login to perform this action.
You will be redirected in
3 sec
