You need to move three matchsticks to form three squares. Can you do it?

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

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

Find the 8 in the below-given Image.

Forwards I am heavy, backward I am not. What am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?