Just 49
70 and 75
To find prime numbers less than 100, the sieve of eratosthenes filters out 1 and all multiples of 2, 3, 5, and 7. All remaining numbers less than 100 are primes.
All multiples of 6 are even numbers.
Multiples of 7 that are less than 60 are 7, 14, 21, 28, 35, 42, 49, 56.Multiples of 14 that are less than 60 are 14, 28, 42, 56. Common multiples that are less than 60 are 14, 28, 42, and 56.
8,16,24,32,40,48,56,64,72,80,88,96
72.
All nonzero numbers have an infinite amount of multiples.
50
it is 44 and 88
Just 49
Just 72.
There are 2 such numbers: 44, 88.
70 and 75
It's 72
21: 21, 42, 63, and 84!
The common multiples of 8 and 12 that are less than 100 are 24, 40, 48, 56, 64, 72, 80, 88, and 96.