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OpenStudy (amber15):
is 1730 divisible by 21? just wondering if it is
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OpenStudy (skullpatrol):
Any ideas?
OpenStudy (amber15):
i dont think it is
OpenStudy (skullpatrol):
Why do you think that?
OpenStudy (amber15):
changed my mind i think it is yes
OpenStudy (rajee_sam):
it should be divisible both by 3 and by 7 then it will be
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OpenStudy (rajee_sam):
if you add all the digits it adds up to 11 which is not divisible by 3 . so this is not divisible by 21
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