What you cannot hold but it is yours?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

The more you take me, the more you leave me behind.
Who Am I?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

I have Rs.50 and I spend it in the way as below.

How can you make number one disappear by adding something to it?

A leopard is hiding in plain sight in the bushes. Only the sharpest eyes can spot the elusive cat. Can you? Test your eye power now!

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

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.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?