Question

9/16,-9/8,9/4,-9/2,9,(?)

Answer 1

Hello from MrBillDoesMath!

Answer:

-18

Discussion:

I immediately noticed that  9/16 times -2 is the next term (-9/8) and  -9/8 times -2 is, again, the next term (9/4). Continuing like this gives

(9/4) * (-2) = - 9/2

(-9/2)*(-2)  = 9

9 * (-2) = -18

which is the desired answer

Thank you,

MrB