SSC CHSL 31 JAN 2017SHIFT 3 TIER 1 REASONING QUESTION 11

11.A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
13, 21, 48, 112, ?
Options:
1. 237
2. 280
3. 255
4. 290
Answer:1

13, 21(13 + 8(cube of 2)), 48(21 + 27(cube of 3)), 112(48 + 64((cube of 4)))

next term will be 112 + 125(cube of 5) = 237