What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Decode below rebus
D
N
A
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S , D

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

Spot the cat in the picture below

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What makes this number unique: 8,549,176,320?