There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Can you count the number of triangles in the given picture?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'