What is the next number in this series?

4,12,84,3612....

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 Odd One Out?
84129
32418
47632
36119
67626
72927

Replace the question mark with the correct number.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

What kind of storm is always in a rush?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?