What should come in place of '?' in the given series?

250 200 160 130 ?

The correct option is 110.

To find the missing number in the series, let us analyze the differences between consecutive terms:
The first term is 250, and the second term is 200. The difference is:
$200-250=-50$
The second term is 200, and the third term is 160. The difference is:
$160-200=-40$
The third term is 160, and the fourth term is 130. The difference is:
$130-160=-30$

Looking at the pattern of differences: -50, -40, -30, we can see that the difference is increasing by +10 at each step (i.e., becoming less negative).
Therefore, the next difference in the series must be:
$-30+10=-20$

Now, we apply this difference to the fourth term (130) to find the missing term (?):
$130-20=110$
Thus, the value that should come in place of '?' is 110.