As you can see. Natural numbers are just a different way of saying triangular numbers. And triangular numbers are numbers that you can arrange into triangles. For e.g. 1,3,6,10,15, etc. So what you have to do is to go ask your guide. SO for example I would go and ask my Math Tutor and if you do not have a math tutor go and ask you math teacher because they would defiantly help you. So yes I am super duper dumb. But I know a thing or two.
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There are 49 numbers between 1 and 100 that are divisible by two.
Since 100/4 = 25, there are 25 numbers between 0 and 100 divisible by 4.
33 numbers between 1 and 100 are divisible by 3.
To find the numbers between 1 and 100 inclusive that are divisible by either 9 or 4, we first determine how many numbers are divisible by 9 and how many are divisible by 4. There are 11 numbers divisible by 9 (9, 18, 27, ..., 99) and 25 numbers divisible by 4 (4, 8, 12, ..., 100). However, we must be careful not to double-count numbers divisible by both 9 and 4 (36, 72). Therefore, the total number of numbers divisible by 9 or 4 between 1 and 100 inclusive is 11 + 25 - 2 = 34.
14 of them.