Select the option in which the numbers are related in the same way as are the numbers in the given set.
(7, 15, 31)
Answer & explanation
Correct answer: option 2
(7, 15, 31)
The Logic followed here is :
(Ist number × 2) + 1 =IInd number and (IInd number × 2) + 1 = IIIrd number
AS
(7 × 2) + 1 =15 and (15 × 2) + 1 = 21
Similarly (3, 7, 15)
(3 × 2) + 1 = 7 and (7 × 2) + 1 = 15