My current age, is the age of my 14 year-old brother plus one third of my age. How old will I be when my brother is twice his current age?

What 6-letter word has the same pair of letters in spots 1 and 5, a different pair in spots 2 and 6 and contains a ‘u’ in between?

There are six glasses in a row. The first three are full of water, and the next three are empty. By moving only one glass how can you make them alternate between full and empty?

Lillian gets in the shower, but her long, flowing hair is not wet when she gets out again. How is this possible?

There are three numbers. The first two are 2/3 and 3/4.

What does the third number have to be to make the average of all three be 2?

This equation is incomplete: 1 2 3 4 5 6 7 8 9 = 100

One way to make it accurate is by adding seven plus and minus signs, like so.

1 + 2 + 3 – 4 + 5 + 6 + 78 + 9 = 100

How can you do it using only 3 plus or minus signs?