How many numbers less than 700 are divisible by both 15 and 21?
Numbers up to 200 divisible by both 2 and 3 = numbers to 200 divisible by 2*3 = 6 which is int(200/6) = int(33.33) = 33
Divisible by both? 2 numbers... 45 and 90
20 of them.
There are 278 5-digit numbers less than 20,000 that are divisible by both four and nine.
The lists of numbers divisible by and not divisible by 600 are both infinite.
How many numbers less than 700 are divisible by both 15 and 21?
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
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.
Numbers up to 200 divisible by both 2 and 3 = numbers to 200 divisible by 2*3 = 6 which is int(200/6) = int(33.33) = 33
Divisible by both? 2 numbers... 45 and 90
Four. 24 and its multiples.
Two numbers: 126 and 147
670
20 of them.
There are 278 5-digit numbers less than 20,000 that are divisible by both four and nine.
The are six such numbers: 18,36,54,72, 90 and 108 .