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Mathematics 20 Online
OpenStudy (anonymous):

what is "!" ?

OpenStudy (owlfred):

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

OpenStudy (anonymous):

an exclamation point. is this an english/grammer question?

OpenStudy (anonymous):

please clarify

OpenStudy (anonymous):

factorial. \[5!=5\times 4\times 3\times 2 \times 1\]

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