Question

Find the next number in each sequence
128, -64, 32 ,-16

Answer 1

128, -64, 32, -16, -8, 4

Explanation:

it's a repeating pattern, 4x2=8x2=16x2=32x2=64x2=128

But you have to add the negative sign to the other number.

hope this helps :)

Answer 2

8,-4.

It seems to be going by a negative half, because 64 x 2 = 128, 16 x 2= 32, etc.