Find the next number in the sequence

1, 2, 6, 21, 88, __?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.

Can you calculate the distance between the fourth and the first village ?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Can you find out the missing number in the grid?

Why is it very easy to weigh a fish?

Decode this picture on T-Shirt and tell what it says ?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

What goes up but never comes down?