What is the next number in the series?

15 29 56 108 208 ?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

John was drowned by he was not wet. How?

Forwards I am heavy, backward I am not. What am I?

Spot 5 differences in two Christmas tree below:

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Which is faster, Heat or Cold ? Explain.