How high do you have to count before you use the letter “a” in the English spelling of the whole number?

What is the next number in the series?

15 29 56 108 208 ?

What is red and smells like blue paint?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Why do people go to bed?

What goes up but never comes down?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

What is the longest word in the dictionary?

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?