Twenty-one.
4030
You would write it as 0.00604
21 is a number. You cannot write that as a probability since it is not an event.
As a number: 21,000,000,000 = 21 billion
This is best written as 1021, since it is such a large number. If you want to write it out, write a one, followed by 21 zeroes.This is best written as 1021, since it is such a large number. If you want to write it out, write a one, followed by 21 zeroes.This is best written as 1021, since it is such a large number. If you want to write it out, write a one, followed by 21 zeroes.This is best written as 1021, since it is such a large number. If you want to write it out, write a one, followed by 21 zeroes.
a+21
21% = 21/100 in fraction form.
XXI
Twenty one.
3 x 7 = 21
21/5 written as a mixed number is 4 and 1/5
21st or twenty-first.