Question

which term of the ap 2,7,12------is 222

Answer 1

an=222
a=2
d=5
an=a+(n-1)d
222=2+(n-1)5
220=(n-1)5
44=n-1
n=45

Answer 2

Answer:

45th term of the AP 2,7,12------is 222.

Step-by-step explanation:

Given A.P series  2,7,12----

we have to find the value of n for which the value is 222.

a=2, d=7-2=5, $a_n=222$

The formula for nth term d AP is

$a_n=a+(n-1)d$

222=2+(n-1)5

220=(n-1)5

44=n-1

n=45

Hence, 45th term of the AP 2,7,12------is 222.