Why is it very easy to weigh a fish?

There are three cows, two dogs, and one cat: How many legs do you have?

Which is faster, Heat or Cold ? Explain.

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

What has one eye, but can’t see?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

When it's bad luck to meet a black cat?

Why do you find that most of the buildings are deprived of the 13th floor?