Question

the task of geeting out terrorist of the golden temple entrusted to major general ( options are) arun kumar vidhya 2 jagat singh arora 3 kuldip singh barar 4 k.p.s gill plz answers any one​

Answer 1

If you see the sequence: 1,3,7,13,21,31,43, deduct Tn from Tn+1. You will see

3–1 = 2

7–3 = 4

13–7 = 6

21–13 = 8

31–21 = 10

43–31 = 12.

The results on the RHS of the equal sign are in an AP and after 12, the next number is 14.

So add 14 to 43 to get 57 as the answer.