What is the next number in this series?

4,12,84,3612....

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Bay of Bengal is in which state?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

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

How many times do a clock's hands overlap in a day ?

Which Travels Faster? Solve below famous picture riddle:

How can you make number one disappear by adding something to it?