Question

${18}^{th}$ term of the AP 1,7,13,19 .... is ________`

• A. 102
• B. 18
• C. 103
• D. 19

Answer 1

Answer: (C)

103

$AP$ is $1,7,13,19,......$

$a=1d=6$

$t_{18}=a+17d=1+17\times 6=1+102=103$