Select the option in which the numbers are related in the same way as are the numbers of the following set.
{9, 12, 18}
Answer & explanation
Correct answer: option 4
{9, 12, 18}
The logic followed here is :
(IInd number - Ist number) ×2 = IIIrd number - Ist number
As
(12 - 9) × 2 = 18 - 12
3 × 2 = 6
6 = 6
Similarly BY checking options
{7, 13, 27}
(13 - 7) × 2 = 27 - 13
6 × 2 = 14
12 ≠ 14 (not correct)
{21, 29, 44}
(29 - 21) × 2 = 44 - 29
8 × 2 = 44
16 ≠ 15 (not correct)
{5, 12, 24}
(12 - 5) × 2 = 24 - 12
7 × 2 = 12
14 ≠ 12 (not correct)
{13, 19, 31}
(19 - 13) × 2 = 31 - 19
6 × 2 = 12
12 = 12 ( correct)