q:24 60
2 2 2 3
2 2 3 5
So we can see that odd multiples of 60 are not divisible by 24, while
even ones are.
1000 >.@% 60
17
shows that there are 16 multiples of 60, <: 1000 and greater than zero.
8 of these are even, divisible by 24, and 8 odd, not divisible by 24 .
60*1+2*i.8
60 180 300 420 540 660 780 900
Does that help?
Mike
On 19/12/2017 18:52, 'Skip Cave' via Programming wrote:
How many numbers from 1 to 1000 are divisible by 60 but not by 24?
Here's my somewhat inelegant explicit solution:
#e=.c#~d=.-.0=24|/c=.a#~b=.0=60|/a=.1+i.1000
8
NB. What are the numbers?
e
60 180 300 420 540 660 780 900
How would I construct a more compact tacit solution?
Skip
Skip Cave
Cave Consulting LLC
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