This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Which is faster, Heat or Cold ? Explain.

Can you write down eight eights so that they add up to one thousand?

Why are all black people so quick ?