answersLogoWhite

0

Each number is multiplied by negative 2 to get the next number. 5 x -2 = -10 -10 x -2 = 20 20 x -2 = -40 -40x -2 = 80 So the next logical number in the series 5 10 20 -40 would be 80.

User Avatar

Wiki User

16y ago

What else can I help you with?