Question

If a sequence is given by $9,12,15,18,\cdots$, then the value of ${16}^{th}$ term is

• A. $50$
• B. $52$
• C. $54$
• D. $56$

Answer 1

The correct option is C $54$

Given : $9,12,15,18,\cdots$
This is an A.P. with $a=9,d=12-9=3$
Now,
$T_{16}=a+(16-1)\times d\Rightarrow T_{16}=9+45=54$