Can you solve this picture maths equation?

If a wheel has 54 spokes, how many spaces are there between the spokes?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

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.

I am white when I am dirty, and black when I am clean. What am I?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

If you say my name, I will no longer exist. What am I?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?