Select the option that is related to the fifth term in the same way as the second term is related to the first term and fourth term related to third term.
14 : 21 :: 6 : 9 :: 12 : ?
Answer & explanation
Correct answer: option 3
14 : 21 :: 6 : 9 :: 12 : ?
The logic followed here is :
IST NUMBER × 2 + HALF OF IST NUMBER = IIND NUMBER
AS
14 : 21
14 × 2 - (14 / 2)
= 28 - 7
= 21
AND
6 : 9
6 × 2 - (6 / 2)
= 12 - 3
= 9
SIMILARLY
12 : ?
12 × 2 - (12 / 2)
= 24 - 6
= 18