What is the word or phrase?

I can write cow in 13 letters.

Can You?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

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

What can you hold in your right hand, but never in your left hand?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

A man was just doing his job when his suit was torn. Why did he die three minutes later?