What word begins and ends with an E, but has only one letter?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

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

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Count the number of triangles in the given picture.

If a wheel has 54 spokes, how many spaces are there between the spokes?

The more it dries, the wetter it becomes. Can you tell what it is?