Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What has no start, end, or centre?

Who always enjoys poor health?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What happened when the wheel was invented?