I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

Count the number of lines in the image below ?

Which is faster, Heat or Cold ? Explain.