Select the option in which the numbers are NOT related in the same way as are the numbers of the following set.
(7, 21, 49)
Answer & explanation
Correct answer: option 1
(7, 21, 49)
The logic followed here is :
As
7 × 3 = 21 and 7 × 7 = 49
Checking in all options
(9, 27, 72) ⇒ 9 × 3 = 27 and 9 × 9 = 81≠72
(6, 18, 36) ⇒ 6 × 3 = 18 and 6 × 6 = 36
(5, 15, 25) ⇒ 5 × 3 = 15 and 5 × 5 = 25
(8, 24, 64) ⇒ 8 × 3 = 21 and 8 × 8 = 64