69 is divisible by these numbers: 1, 3, 23, 69.
47 is a prime number and is divisible by 1 and 47 only. 51 is divisible by 1, 3, 17, 51.
621 is divisible by these numbers: 1, 3, 9, 23, 27, 69, 207, 621.
{| |- | 78 69 60 51 42 33 |}
-10
both are composite numbers 51 is divisible by 1,3,17,51 and 91 by 1,7,13,91
345 is divisible by: 1 3 5 15 23 69 115 and 345.
51 is not divisble by two because it is an odd number. All odd numbers are not divisible by 2 (such as 11,13,33,35). On the other hand, all even numbers are divisible by 2.divisble means that it can be divided by 2 and the answer is a whole number
61 is a prime number. 49 is not a prime number as it is divisible by 7. 51 is not a prime number as it is divisible by 3.
1, as are all numbers. oh, and 17.
All but 28.
There will be (200-100)/2+1 = 51 numbers divisible by 2.There will be Floor[(200 - 100)/3] = 33 numbers divisible by 3.Multiples of 6 from the 17th through the 33rd will be counted twice by the sum of these numbers (51+33). There are 17 of them.That means the count of numbers you are interested in is 51+33-17 = 67.