AP ICET 2017 Shift 2 Paper

Question : 43 of 200

Marks: +1, -0

3,8,24,48,120,______

Solution:

\;\;\;\;3,

\;\;\;\;8,

24,

\;\;\;\;\;\;48,

\;\;\;\;\;120,

\;\;\;\;↓

\;\↓

\;\;\;↓

\;\;\;\;\;↓

↓

\;\;\;\;\;↓

\;\;(2^2+1)\;\;\;(3^2-1)\;\;\;(5^2-1)\;\;\;(7^2-1)\;\;\;(11^2-1)\;\;\;\;(13^2-1)

↑ 1 less than square of consecutive prime number

∴13^2-1=168

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