What number should come in place of the question mark below?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Replace the question mark with the correct number in below Picture:

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Which wheel of car does not rotate when you turn your car right?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?