AP ICET 2015 Paper

Question : 42 of 200

Marks: +1, -0

2, 6, 12, 20,_______ ,42

Solution:

\;\;2,

\;\;6,

\;\;12,

\;20,

\;42

\;\;↓

↓

↓

↓

\;\;\;↓

\;\;↓

\;\;(1×2)\;\;(2×3)\;\;(3×4)\;\;(4×5)\;\;(5×6)\;\;(6×7)

The pattern is

n(n+1)

∴?=5×6=30

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