What runs around the whole yard without moving?

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 ?

How many Watermelons are there in the below picture?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?