In each of the following questions, select the re lated number/word/letter from giv en alternatives. 9:7:: 80 : ?

Options

A. 48
B. 50
C. 78
D. 82

Answer

C

Explanation

`(3)(3)^(2) =9 , (3)^2-2=7`
Similary,
`(3)^(4) -1 =81 -1 =80`
`(3)^(4)- 3 = 81 -3 = 78`
In simple way, 9-2 =7 and 80 -2 = 78