Question

The $n^{th}$ term of the sequence $5\times (1+6),10\times (2+6),15\times (3+6)$___ is

• A. n(n+6)
• B. 3n(n+6)
• C. 5n(n+6)
• D. 4n(n+6)

Answer 1

The correct option is C

5n(n+6)

Given $5\times (1+6),10\times (2+6),15\times (3+6)$

$\Rightarrow 5\times 1(1+6),5\times 2(2+6).5\times 3(3+6)$

$\Rightarrow 5n(n+6)$