Recent Riddles & Brain Teasers

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?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

In which direction should the missing arrow point?