I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Replace the question mark with the correct number in the below-given picture?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Can you find a five letter word that is left with only two letters if one is removed?

Count the number of squares in the picture below.

Find the number of squares in the below picture

What is always in front of you but can’t be seen?