Question

The first term of an ap is 5 and its 100th term is -292 find the 50th term of an Ap

Answer 1

Step-by-step explanation:

a1=5

a100=-292

a100=a+(n-1) d

-292=5+(100-1)d

-292-5=99d

-297/99=d

d=-3

so,

a50=a+(n-1)d

a50=5+(49×-3)

a50=5-147=-142