Question

5 1/2 + 11 + 33/2 .... + x = 550
Find the AP

Answer 1

Answer:

We can see that First term a=5

2

1

=

2

11

and common difference d=11−

2

11

=

2

11

Now, x=a+(k−1)d⇒550=

2

11

+(k−1)

2

11

⇒550=k

2

11

⇒k=100