Solve below rebus puzzle?

How many bananas can you eat if your stomach is empty?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Remove two matchsticks to make the below equation correct.

How many times do a clock's hands overlap in a day ?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you count the number of triangles in the given picture?

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?