What has a ring but no finger?

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?

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

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

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

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.