All non-zero numbers have an infinite amount of multiples. There are no numbers with exactly five.
Any of its multiples
Multiples of 50 are the only numbers that are both. All other multiples of 5 aren't.
Multiples of 5.
All multiples of 5 are numbers ending in either 5 or 0.
They are multiples of 3
the common multiples of 5 and 6 is 30
There are three numbers between 10 and 50 which are divisible by both 3 and 5. All numbers that are multiples of 3 and 5 are the multiples of the lowest common multiples (lcm) of 3 and 5 which is 15. The multiples of 15 between 10 and 50 are {15, 30 and 45}, thus there are 3 numbers.
Since you didn't specify a single number, and all numbers are multiples of themselves, the five smallest multiples are the counting numbers 1 to 5.
All decimals, and all whole numbers that do not end in zero or 5, are not multiples of 5 .
Since both 3 and 5 are prime numbers, only numbers that are multiples of its product are the numbers that are divisible by both. 15 is the LCM of 3 and 5 and hence all multiples of 15 are divisible by both 3 and 5
60 and all multiples of 60.
Prime and odd numbers