Question

What is the 22nd term in the sequence: 5, -10, 20, -40, 80......?

Answer 1

-10,485,760

Step-by step:

you have to find the pattern which in this case every other positive number is multiplied by 4, as well as the negatives which is multiplied by 4 aswell.

When you go through writing down every number the 22nd one is -10,485,760