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sam
sam asked in Science & MathematicsMathematics · 4 weeks ago

How many arrangements of the word ACTIVE are there if C&E must be always together? ?

1 Answer

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  • Dixon
    Lv 7
    4 weeks ago

    Assuming you mean arrangements of the letters.

    If C and E are together we initially treat them as one unit.

    Then there are 5! arrangements.

    But since C and E can be in 2 arrangements themselves, we get

    2(5!)

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