What is common among 11, 69, and 88?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

People put me on the table and cut me but do not eat me. What am I?

Where do fish keep their money?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Here is a Swiss Cross. You have to make two straight cuts in the figure so that it is divided into four congruent pieces. Also, you should be able to join these pieces into a square then. Can you accept this challenge?