The more of this there is, the less you see. What is it?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

The more you take me, the more you leave me behind.
Who Am I?

What has many keys but can’t open a single lock?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

If six children and two dogs were under an umbrella, how come none of them got wet?

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?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

How many letters are in the alphabet?