Fill in the blanks in the following table, given that a is the first term, d the common difference and an the nth term of the AP:
$a$$d$$n$$a_n$
____$-3$18$-5$
"

AcademicMathematicsNCERTClass 10

Given:

$d=-3, n=18, a_{n}=-5$

To do:

We have to fill in the blank.

Solution:

$d=-3, n=18, a_{n}=-5$

We know that,

$a_{n}=a+(n-1) d$

$-5=a+(18-1)(-3)$

$-5=a-51$

$a=-5+51$

$a=46$

raja
Updated on 10-Oct-2022 13:20:19

Advertisements