What is the next number in this series?

4,12,84,3612....

I have teeth but i don't bite. Who Am I ?

Why 1729 is a magic number? Answer Logically.

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What do you get if you add 2 to 100 four times?

Next Number in the Series,

5, 16, 49, 104, ?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven