What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What is at the end of a rainbow?

Be active and find the killer in the picture Riddle below.

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

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

Can you name some countries which do not have the alphabet 'A' in them?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

What word begins and ends with an E, but has only one letter?