Question

The fifth term of the A.p 3,7,11,..... is

Answer 1

Answer:

here'

a=3

and d=7-3=4

fir fifth term

a+(n-1)d

=3+(5-1)4

=3+(4)4

=3+16

19

is ur answer

Answer 2

Answer:

Step-by-step explanation:

In a Given A.P ;

a = 3

d = 7-3 = 4

On the contrary let 144 be the nth term of A.P

Tn = 144

n = ?

Tn = a+(n-1)d

144 = 3+(n-1)4

n-1 = 141/4

n = 35.25+1

n = 36.25

As the value of n is a decimal or number, hence 144 is not the term of given A.P