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RioAnne

  • 3 years ago

7. What is the value of 7P3? with permutations

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  1. anonymous
    • 3 years ago
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    \[7\times 6\times 5\]

  2. RioAnne
    • 3 years ago
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    210

  3. RioAnne
    • 3 years ago
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    840?

  4. myininaya
    • 3 years ago
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    210 is right

  5. myininaya
    • 3 years ago
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    \[n P r=\frac{n!}{(n-r)!}\]

  6. myininaya
    • 3 years ago
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    that is the formula

  7. myininaya
    • 3 years ago
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    \[7 P 3=\frac{7!}{(7-3)!}=\frac{7!}{4!}=\frac{7 \cdot 6 \cdot 5 \cdot 4!}{4!}=7 \cdot 6 \cdot 5 \]

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