Oh, dude, let's break it down. So, first, you gotta figure out how many numbers are divisible by 3, right? Then, do the same for 7. But, here's the kicker - you gotta remember to subtract the numbers divisible by both 3 and 7. It's like a math puzzle, but with numbers. So, like, get your calculator out and have fun with it.
Infinitely many.
19 of them.
There are 95 numbers in the range of 1 to 1,000 that are divisible by seven but not by three.
5, 7, a bunch of numbers that are odd are not divisible by 3. numbers that are divisible by three can have all their numbers added together and come out with a number that is divisible by 3.
Eight of them.
Four and they are: 2, 3, 5 and 7
There are 14 numbers between 1 & 100 that are divisible by 7.
Two numbers: 126 and 147
By four prime numbers which are: 2 3 5 and 7
The smallest 3-digit multiple of 7 is 105 = 15*7 The largest 3-digit multiple of 7 is 994 = 142*7 So there are 142-14 = 128 3-digit multiples of 7, ie 128 3-digit numbers that are divisible by 7.
prime numbers between 0 -100 which are divisible by 7: 7