How many times do a clock's hands overlap in a day ?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

Can you name four days which start with the letter 'T'?

What does below Rebus say?

XLR8

What does this simple rebus mean?

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?

Can you count the number of blocks in the picture below?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What demands an answer, but asks no questions

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?