Quantitative and Data
Interpretation and Sufficiency
49. The missing numbers in the below series would
be 1:1, 8:4, 9:27, 64:16, 25:125, ?:?, 49:343,
a. 36:316 b. 216:36 c. 316:16 d. 32:316
Solution:
In each pair the square of a number and its cube are taken.
For odd numbers the order is n2 : n3
and for the even numbers the order is n3 : n2
\ 216 : 36 is the required pair. Choice (b)