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

If you say my name, I will no longer exist. What am I?

Find the next number in the series below

21 32 54 87 131 ?

There are forty elephants and they have forty-fore heads. How can this be possible?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

You can see it everyday, But cannot touch it at will. What is it?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What is 3/7 chicken, 2/3 cat and 2/4 goat?

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?

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