What number do you get when you multiply all of the numbers on a telephone's number pad?

What seven-letter word has hundreds of letters in it?

Replace the question mark in the picture below.

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

How can you tell a raw egg from a hard-boiled egg?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

O_er_t_o_

Complete the missing letters of the given word.

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?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.