There are infinitely many numbers.
For example,
21.456542700000000000001
21.456542700000000000000005
21.456542700000000002
21.10, 21.12, 21.13....... and so on.
An infinite number of decimals are between any two numbers that aren't the same.
There are an infinite number of them between 21 and 22. Here are three of them: 21.0000001 21.0000002 21.9999999
if you mean between 20 and 22, there's only one whole number (21)
An infinite number of fractions of a second.
21.5 seconds
There are 21 minutes in 1260 seconds. You can convert seconds to minutes by dividing the number of seconds by 60 (since there are 60 seconds in a minute).
-- 21.3 seconds -- 21.6 seconds -- 21.9 seconds ? ? ? ?
Three numbers between 21 seconds and 22 seconds are 21.1 sec, 21.2 sec, and 21.3 sec
21.03, 21.05, 21.07 is the answer
1 minute 21 second and 42 milli second is equal to 81.42 seconds.
There are no whole numbers between 20 and 21. Only fractions or decimals exist between these two numbers. Whole numbers between 20 and 25 are 21, 22, 23, and 24.