(UPS CSAT 2022)
a) 45
b) 27
c) 18
d) 9
Solution: Ans.(d)
p × q = 2430
If we factories 2430, we get 2430 = 9×9×6×5
Now we can apply hit and trial, (9×6)(9×5) = 54×45
Posted inUPSC CSAT
Let p be a two-digit number and q be the number consisting of same digits written in reverse order. If p×q = 2430, then what is the difference between p and q ?
Posted by
By
No Comments
By
No Comments