What has lots of eyes, but can’t see?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

Can you spot the man between the coffee bean in the picture below ?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

What runs around the whole yard without moving?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Imagine you are in a room with no windows or doors. How will you get out?