How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Can you start the fire using two pieces of wood?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

What's the best place to go shopping in the ocean?

Can you find the thief by just looking at the picture below?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10