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Mathematics 8 Online
OpenStudy (anonymous):

Find the number of permutations in the word circus.

OpenStudy (calculusxy):

A1 R1 I2 H1 M1 E1 T2 C1: 12 letters including 2 repeats 12!/2!2! = 119 750 400 <------- C2 I1 R1 U1 S1: 6 letters including 1 repeat 6!/2! = 360

OpenStudy (calculusxy):

From yahoo answers

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