2 years ago

How many ways can six kids line up in a single row to have their picture taken?

1 answer:

4 0

Slot method aka permuations
6 slots
1st slot: 6 options
2nd slot: 5 options (1 went to first slot)
3rd slot: 4
4th slot:3
5th slot:2
6th slot:1

multiply
6*5*4*3*2*1=720

720 ways

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2 years ago

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$\bf \textit{difference of squares}
\\ \quad \\
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-------------------------------\\\\
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\\\\\\\
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3 years ago

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Answer:

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