If you say my name, I will no longer exist. What am I?

What has to be broken before you can use it?

How many letters are in the alphabet?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I am the fastest animal but cannot climb the tree. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?