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?

What is the next number?

77, 49, 36, 18 ?

What does this below rebus puzzle mean?

Find out the number of circles in the given picture having Illusion

What is black when you buy it, red when you use it, and gray when you throw it away?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

The more of this there is, the less you see. What is it?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

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

What's the best place to go shopping in the ocean?