A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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

How many times can you subtract the number 5 from 25?

If an electric train is travelling south, then which way is the smoke going?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

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

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.

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

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?