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Mathematics 11 Online
OpenStudy (anonymous):

hi,guys i became a fan of 5 users on open study,each of them also became fans to 5 users,the chain goes on

OpenStudy (anonymous):

how many invites are sent on the tenth mailing(chain),provided each send 5 invites

OpenStudy (anonymous):

OpenStudy (anonymous):

so how many fans are fanned after the 10th mailing

OpenStudy (anonymous):

b)on which mailing will the chain have 1 million users fanned...just bored

OpenStudy (anonymous):

GS

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