There are no numbers that are divisible by 21 but not by 7 so the "or 21" part of the question can be ignored.There are 166 numbers between 1 and 1000 that are divisible by 6. However, 23 of those are also divisible by 7.So 166 - 23 = 143 numbers.
Divisible by 3
12345 is divisible by 3 and the answer is 4115
Suppose x = sqrt(3*a) where a is an integer that is not divisible by 3. then x2 = 3*a which is divisible by 3. but x is not even rational and so is not an integer and is certainly not divisible by 3.
Well, to find out if any number is divisible by 3, you add up the number's factors. If the number you come up with is divisible by 3, then the entire number is divisible by 3.For example:138= 1+3+8= 1212 is divisible by 3.
166 is divisible by: 2, 83.
It is divisible by any of its factors which are: 1, 2, 83 and 166
166 / 4 = 41.5 166 / 6 = 27.66
1, 2, 3, 6, 83, 166, 249, 498.
No. It is divisible by 2.
1, 2, 3, 6, 9, 18, 83, 166, 249, 498, 747, 1494
1, 2, 4, 83, 166, 332
166
No, it is divisible by 3.No, it is divisible by 3.No, it is divisible by 3.No, it is divisible by 3.
166 and 2/3 = 500/3
There are no numbers that are divisible by 21 but not by 7 so the "or 21" part of the question can be ignored.There are 166 numbers between 1 and 1000 that are divisible by 6. However, 23 of those are also divisible by 7.So 166 - 23 = 143 numbers.
It is divisible by 3, for example.It is divisible by 3, for example.It is divisible by 3, for example.It is divisible by 3, for example.