Question

which term of the AP 5*1/2,11,16*1/2,.. is 550?

Answer 1

HERE IS THE ANS:-

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Answer 2

Given:

a=5 1/2

=11/2

d=11-11/2

=22-11/2

=11/2

Let nth term be 550.

a+(n-1)d=550

11/2+11/2(n-1)=550

=11/2(1+n-1)=550

n=550*2/11

=n=50*2

=100

The 100 th term is 550.

Hope it helps.