Question

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

Answer 1

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

Answer 2

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)