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1 through 7, inclusive

by sanju09 » Sat Aug 14, 2010 2:58 am
What is the lowest positive integer that is divisible by each of the integers 1 through 7, inclusive?
(A) 420
(B) 840
(C) 1260
(D) 2520
(E) 5040


[spoiler]Source: Picked from some source unknown to www.avenuesabroad.org[/spoiler]
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by clock60 » Sat Aug 14, 2010 3:06 am
looks like 7*6*5*2=420. here we can omit 4, as 6 has one 2, and one 2 is in the list
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by kvcpk » Sat Aug 14, 2010 3:16 am
sanju09 wrote:What is the lowest positive integer that is divisible by each of the integers 1 through 7, inclusive?
(A) 420
(B) 840
(C) 1260
(D) 2520
(E) 5040


[spoiler]Source: Picked from some source unknown to www.avenuesabroad.org[/spoiler]
Answer is the LCM of 1,2,3,4,5,6,7
= 420
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