Correct Answer - Option 4 : 841

The pattern followed here is shown below:

Here, the** square of Prime numbers starting from 11 is continued.**

(11)^{2} = 121

(13)^{2} = 169

(17)^{2} = 289

(19)^{2} = 361

(23)^{2} = 529

(29)^{2} = **841**

Hence, **"841"** is the correct answer.

**NOTE : **Here another sequence is also observed which is of +2 and +4 so the next square term would be 25^{2} = 625, which is also in the options but as this is a previous year paper question, the valid and acceptable answer given by the board is 841, according to the given logic of prime numbers.