Friday, April 13, 2012


Students taking May SAT MAY want to try today's Twitter problem I just posted at

If n is a positive integer, then the expression n(n+3) + (n+3)(n+8) must be divisible by
I.   2
II.  4
III. 8

This is a typical "cases" type but I omitted the usual choices like
(A) I only

Might be worth some discussion to consider more than the typical student's "plug-in"  approach. That's why I added "EXPLAIN! "
There is some rich mathematics to be unearthed here IMO...

Interested in 175 more of these types with answers? Try my new Math Challenge Problem/Quiz Book. Look at top of right sidebar.

Sent from my Verizon Wireless 4GLTE Phone

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