Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.
78 : 117 :: 90 : ? :: 108 : 162
Answer & explanation
Correct answer: option 4
78 : 117 :: 90 : ? :: 108 : 162
The logic followed here is :
Number × 6 : Number × 9
As
78 : 117
13 × 6 = 78
13 × 9 = 117
For 108 : 162
18 × 6 = 108
18 × 9 = 162
Similarly
90 : ?
15 × 6 = 90
15 × 9 = 135