Divisibility RULES for GMAT Quantitative Reasoning

Learn not only HOW to tell whether a number is divisible by 2, 3, 5, 6, 9, or 15, but ALSO WHY those rules work. The GMAT is excellent at testing your understanding of the reasoning behind these rules!

0:00 Intro
0:49 Divisibility by 2 or 5
3:04 Divisibility by 4, 25, 50, or 100
4:23 Divisibility by 3 or 9
7:00 General Divisibility (e.g. by 6 or 15)
8:00 Conclusion

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[nicholascalderon]

This video is GOLD Avi! I'm still wrapping my head around this new concept of divisibility but I know this will make a difference between breaking 500 to 700+ on the GMAT. I always watch your videos when I need an explanation on GMAC practice problems. You the man; I hope you continue to post more solutions!

[schuang]

First time I’ve seen the divisible by 3 proof, very interesting! (despite it being many years since taking the gmat)

[onyekachinelson]

Hi Avi, you didn't mention divisibility by 7 and 8.
Thanks.

[sidducherukuri]

Please Do A Video of Total Quantitative Reasoning for GMAT Exam
In a Single Video