What has no start, end, or centre?

What Deficiency does the below rebus represent?

VIT_MIN

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

You can see it everyday, But cannot touch it at will. What is it?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

What does the below rebus riddle means?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

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?

Which is the smallest number that you can write using all the vowels exactly once?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?