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Mathematics 5 Online
OpenStudy (anonymous):

http://static.k12.com/bank_packages/files/media/mathml_82ccc2cc785b18316596d8ed454eb2581e8ac2f1_1.gif A. 18 B. 36 C. 72 D. 216

OpenStudy (anonymous):

Can some help me?

OpenStudy (anonymous):

well 12 and 18 are only non primes build tha pyramid thingy

OpenStudy (anonymous):

|dw:1383965077004:dw| I not sure but i think it is 2

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