I always drive my customer away.

Who am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I am the fastest animal but cannot climb the tree. What am I?

Which alphabet is a part of our body?

What goes up but never comes down?

I have no life, but I can die. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

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?