Q. The $8^{th}$ common term of the series
$S_{1} = 3 + 7 + 11 + 15 + 19 + \dots\dots$
$S_{2} = 1 + 6 + 11 + 16 + 21 + \dots .$
is ______

844 144 JEE MainJEE Main 2023Sequences and Series Report Error

Answer: 151

Solution:

$T_{8} = 11 + (8 - 1) \times 20$
$= 11 + 140 = 151$