When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

How can you take 2 from 5 and leave 4?

Can you find the missing piece of the Porsche?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What has to be broken before you can use it?

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.