Question

$(n-2{)}^{th}$ term of an arithmetic progression will be __________.

• A. $a+(n-1)d$
• B. $a+(n-3)d$
• C. $a+(n-2)d$
• D. None

Answer 1

Answer: (B)

$a+(n-3)d$

$n^{th}$ term of an A.P. is
$T_n=a+(n-1)d$
$\therefore (n-2{)}^{th}$ term of an A.P. is

$T_{n-2}=a+(n-2-1)d$
$=a+(n-3)d$