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Mathematics 13 Online
OpenStudy (anonymous):

how do i do this?

OpenStudy (anonymous):

A. 81 B. 36 C. 63 D. 72

OpenStudy (anonymous):

\[_9P_2=9\times 8\]

undeadknight26 (undeadknight26):

well...Now i feel stupid.

OpenStudy (anonymous):

start at 9 and multiply use only two numbers

OpenStudy (camerondoherty):

ikr

undeadknight26 (undeadknight26):

Well lemme just uhh try to redeem my self with another question...

OpenStudy (anonymous):

another example \[_{10}P_3=10\times 9\times 8\]

OpenStudy (anonymous):

@satellite73 would the answer be 81?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

thanks so much!

OpenStudy (anonymous):

wait wait wait

OpenStudy (anonymous):

\[9\times 8=72\]not \(81\)

OpenStudy (anonymous):

oh right! stupid me! sorry yes 9x8=72 not 81, sorry didnt know what i was thinking

OpenStudy (anonymous):

lol you got this now?

OpenStudy (anonymous):

yea lol

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