Answer:
The correct answer is C. The 4th term is 11.
Step-by-step explanation:
Since the next term is one more than twice the previous, we can calculate it by the following expression:

So the second term is:

The third term:

And the fourth term:

The correct answer is C. The 4th term is 11.
it adds 11 to each number, 4+11+=15, 15+11=26, 26+11=26 and it keeps going
40! / 30! = 40*39*38*37*36*35*34*33*32*31
dividing this by 10! 10*9*8*7*6*5*4*3*2*1
= 4*13*19*37*17*11*4*31
= 847,660,528