If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

Look at the picture and find out which square is not linked with any of the other squares.

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

What can go through glass without breaking it?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

What is common among 11, 69, and 88?

Solve the rebus riddle in the picture below.

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

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?