Question

9;negative 18;27 what is the next number?

Answer 1

-36 or negative 36

Explanation:

First number = `9 times 1 = 9`

Second number = `9 times -2 = -18`

Third number = `9 xx 3 = 27`

It forms a fixed pattern

So , Fourth number = `9 xx -4 = -36`