How class iv differs from class iii is based solely

a) What is the value of the 4 in the number 546 210? Give your answer in words.

b) Write the number twenty one thousand and sixty four in figures.

c) Which of these is the correct way to write 36 000 in words?

A: Thirty six and a thousand

B: Three million and six thousand

C: Three six thousand

D: Thirty six thousand