What Comes Next in the Sequence: 3, 10, 5, 16, 8, 24, 12, 36, 18, ??,??

If you see the sequence of numbers you will realize that there are 2 alternate sequences in the riddle;

The first sequence has 2 possibilities, in case of an odd number you multiply by 3 and add 1 and in case of even number you just multiply by 3.

The second sequence is we divide the previous number by 2.

So to put this in the series;

3 x 3 + 1 = 9 + 1 = 10;

10 / 2 = 5;

5 x 3 + 1 = 15 + 1 = 16;

16 / 2 = 8;

Now since 8 is an even number we just multiply by 3;

8 x 3 = 24;

24 / 2 = 12;

12 x 3 = 36;

36 / 2 = 18;

So we can continue the series to find the mnissing numbers as;

18 x 3 = 54;

54 / 2 = 27

SO the next 2 numbers in the series are 54 & 27.