Identify the hidden meaning behind this picture?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

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

What has to be broken before you can use it?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

Can you find the missing piece of the Porsche?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

Why do Chinese men eat more rice than Japanese men do ?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.