What is the next three numbers in this pattern 10 5 20 10 40

10, 5, 20, 10, 40, 20, 80, 40, 160, 80,

Next Three Numbers:  20, 80, 40

Pattern: Take half of the first term. 1/2 of 10 = 5 which is the second term.

Next, multiply the second term by 4. 5 times 4 = 20

Divide 20 by 4 to get 10

Multiply 10 by 4 to get 40


Take half of 40 to get 20 (the first of the three missing terms)

Multiply 20 by 4 to get 80 (the second missing term)

Multiply 80 by 1/2 to get 40 (the third missing term)

The Next Three Numbers Would be 20, 80 and then 40

This Is Because the pattern is ÷2 as seen by 10 ÷2 =5 and then ×4 as seen 5×4 = 20. If you keep continuing this in it will be 10, 5, 20, 10, 40, 20, 80, 40

16, -8,4,-2,1
-15,-18, -21.6, -25.92, -31.104,...
625, 125, 25, 5, 1,...
these are the correct ones. sorry it took so long to get an answer