Select the option in which the numbers are related in the same way as are the numbers of the following set.
{6, 15, 27}
Answer & explanation
Correct answer: option 3
{6, 15, 27}
The logic followed here is :
(IInd number × 2) - (Ist number ÷ 2) = IIIrd number
In {6, 15, 27}
(15 × 2) - (6 ÷ 2)
30 - 3 = 27
same as
{4, 10, 18}
(10 × 2) - (4 ÷ 2)
20 - 2 = 18