People make me, save me, change me, raise me. What am I?

If two's company, and three's a crowd, then whats four and five ?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

You need to arrange three 7 and mathematical symbols to form number 1?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

What happened when the wheel was invented?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?