Select the option in which the numbers are related in the same way as are the numbers of the following set.
(21, 13, 17)
Answer & explanation
Correct answer: option 4
(21, 13, 17)
The logic followed here is :
(Ist number + IInd number) ÷ 2 = IIIrd number
AS
(21 + 13 )÷ 2
34 ÷ 2 = 17
Similarly
(32, 46, 39)
(32 + 46)÷ 2
78 ÷ 2 = 39