dl9006

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This question is from the kaplan subject test.


Question:
If N is any positive integer, how many consecutive
integers following N are need to insure that at least
one of the integers is divisible by another positive
integer m?
A. m - 1
B. m
C. m + 1
D. 2m
E. m2

Ans/Explanation:
A
One out of every m consecutive integers is divisible by the integer m. The wording of this question is difficult, so you might have thought the question was asking you to count N itself to get the correct answer.
But it was not, so m − 1 consecutive integers after N plus N itself are required in order to ensure that one
of these integers, including N, is a multiple of m.


i don't understand the question nor the explanation

can someone please explain?
 

Streetwolf

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Yeah do a search. There's been 2 threads in the last week. Takes too much time to time up a good explanation but I did it in one of those threads.
 
OP
dl9006

dl9006

10+ Year Member
5+ Year Member
Jul 2, 2008
541
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Dental Student
Yeah do a search. There's been 2 threads in the last week. Takes too much time to time up a good explanation but I did it in one of those threads.
would you happen to know what the thread was called or have a link?

i'm having a hard time finding it

thanks!

edit:

ahha! nm found it. just searched your previous posts and there it was!
thanks!

here's the link btw for those of you who want to take a look:
http://forums.studentdoctor.net/showthread.php?t=645168