Question

find n if the nth tearmvof the following ap is 68 5,8,11,14

Answer 1

hope this helps you...

Answer 2

$a + (n - 1)d$
where:::
$d = a2 - a1$
a is the first term of ap
n is the nth term
d differnce of the ap term.
$5 + (n - 1)3 = 68$
$5 + 3n - 3 = 68$
$3n = 66$
$n = 66 \div 3 = 22$