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

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

What is so fragile that saying its name breaks it?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I have eight fingers and two thumbs but I do not live. What Am I?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

What goes through cities and fields, but never moves?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?