What four weights can be used to balance from 1 to 30 pounds?

Which country gets ill every time?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

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

Using Only Five 5's and any mathematical operator make sum as 37

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

81 x 9 = 801. What must you do to make the this equation true?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Find the next number in the following series:
6, 14, 26, 98, __?