Since 23 and 5 are prime numbers they can only be multiplied by its self, which is
1*23 and 1*5.
115, 230, 345 and so on.
Multiples of 3: 123, 45, 6, 78, and 90 Multiples of 7: 7, 14, 28, 56, and 903 Primes: 5, 23, 41, 67, and 809
23 is prime. Prime numbers don't have proper factors. Its multiples are 23, 46, 69 and so on.
Multiples of 5 are not prime numbers except 5, so there are none. But, there are prime numbers between 20 and 40, like 23, 29, 31 and 37.
Multiples of 50 are the only numbers that are both. All other multiples of 5 aren't.
LCM is 40, which is the multiple of the highest power of prime factors in the given numbers (23 x 5).
Multiples of 5.
All multiples of 5 are numbers ending in either 5 or 0.
Any of its multiples including itself
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.
the common multiples of 5 and 6 is 30
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.