Can you solve the maths in the below-given picture equation?

What can you catch but never throw?

What is black when you buy it, red when you use it, and gray when you throw it away?

Henry has been caught stealing cattle and is brought into town for justice. The judge is his ex-wife Gretchen, who wants to show him some sympathy, but the law calls for two shots to be taken at Henry from close range. To make things a little better for Henry, Gretchen tells him she will place two bullets into a six-chambered revolver in successive order. She will spin the chamber, close it, and take one shot. If Henry is still alive, she will then either take another shot, or spin the chamber again before shooting.

Henry is a bit incredulous that his ex-wife would carry out the punishment, and a bit sad that she was always such a rule follower. He steels himself as Gretchen loads the chambers, spins the revolver, and pulls the trigger. Whew! It was blank. Then Gretchen asks, 'Do you want me to pull the trigger again, or should I spin the chamber a second time before pulling the trigger?'

What should Henry choose?

You need to arrange three 7 and mathematical symbols to form number 1?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

What does the below rebus puzzle mean?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Can you find out the remainder when 3^300 is divided by 5?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?