Sequences And Series Question 13

Question 13 - 30 January - Shift 2

The $8^{\text{th }}$ common term of the series

$S_1=3+7+11+15+19+\ldots .$.

$S_2=1+6+11+16+21+\ldots$

is

Show Answer

Answer: 151

Solution:

Formula: General Term of an AP

$T_8=11+(8-1) \times 20$

$=11+140=151$