Take away the whole and some still remain. What is it?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

What number do you get when you multiply all of the numbers on a telephone's number pad?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

I know a number which is spelt in alphabetical order.
Do you?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?