what are the next three numbers

Question

 4,12,5,8,24,10,12,36,15

Answer 1

First 3 numbers =  4, 12, 5

Next 3 numbers =  8, 24, 10

Next 3 numbers =  12, 36, 15

If the numbers 4, 12, 5 are  multiplied by 2 we get 8, 24, 10

If the numbers 4, 12, 5 are  multiplied by 3 we get 12, 36, 15

Therefore If the numbers 4, 12, 5 are  multiplied by 4 we get the required answer ie., 16, 48, 20.

Therefore the numbers are 4,12,5,8,24,10,12,36,15,16, 48, 20.