3 years ago

Every day the teacher has her class of ten students line up for lunch. how many different ways can the students line up?

1 answer:

6 0

That's a question for arrangement, so we have:
$A^{10}_{10}=10*9*8*7*6*5*4*3*2*1=5.4*10^{11}$

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by rationalising the denominator,

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= 2 sqrt 5/5

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hope this helps! :))))

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