Question

Given the sequence 5, -10, 20, -40, the next two numbers in sequence are 80 and -160

A true

B false

Answer 1

notice that each next term is obtained by multiplying -2 to current term.

so ask yourself, is -40 * -2 = 80 ??
is 80*-2 = -160??

if you get a yes for both, then its true