Select the option /number which is related to 3rd number in the same way as 2nd number is related to 1st number?
4 : 25 :: 7 : ?
1
64
2
81
3
21
4
41
Select the option /number which is related to 3rd number in the same way as 2nd number is related to 1st number?
4 : 25 :: 7 : ?