I have Branches

I am a fruit. I am always sad.

What I am?

Where does Friday come before Thursday?

Think of a number

Step 1: Multiply it by 3

Step 2: Add 6

Step 3: Divide by 3

Step 4: Subtract the number chosen in step one from the answer in step 4.

What is the answer?

What goes up but never comes down?

What am I?