What is the word or phrase?

Replace the question mark with the number below given a simple math problem.

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

Find the value of "?" in the ball picture Riddle below:

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

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

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Find the last number in the series below:

voN luJ yaM raM ---

What is the Surname of Barbie Doll?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?