Dave
@_
Learned (via @quora): Is 719 a multiple of 11? 7-1+9=15, not a multiple of 11, so no. 8316? 8-3+1-6=0, yes. 91938? 9-1+9-3+8=22, yes.
2/28/2013, 1:13:01 AM
Favs: 1
Retweets: 1
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Dave
@_
Learned (via @quora): Is 719 a multiple of 11? 7-1+9=15, not a multiple of 11, so no. 8316? 8-3+1-6=0, yes. 91938? 9-1+9-3+8=22, yes.
2/28/2013, 1:13:01 AM
Favs: 1
Retweets: 1
link