Question

4,8,12,16,20....,120मे कितने पद है​

Answer 1

Answer: 30.

Step-by-step explanation: Here ; a=4, d=8-4=4, l=120.

Now,

l = a+(n-1)d

120 = 4+(n-1) 4

120-4 = 4n-4

116+4=4n

    n = 120/4=30.

Answer 2

Let, a=4

and, l=120

common difference,d=8-4=4

so, l=a+(n-1)d

120=4+(n-1)4

120-4=4n-4

116+4=4n

120=4n

n=120/4

=30

(n=30&d=4)