Identify the hidden meaning behind this picture?

What four weights can be used to balance from 1 to 30 pounds?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

What goes up but never comes down?

Can you start the fire using two pieces of wood?

What has a ring but no finger?

What does below Rebus mean ?

esgg sgeg gegs gsge

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?