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? asked in Education & ReferenceHomework Help · 1 decade ago

What is the highest power of 2 that will divide 90! ?

And how does that work? Explain please, thank you.

Update:

I have the multiple choice answers of 86, 45, 90, 75, and 85 :/

Update 2:

Also it's 90!

! = factorial

2 Answers

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  • Me
    1 decade ago
    Favorite Answer

    there is no highest power...the answer does not exist

  • goinutsinor
    Lv 4
    1 decade ago

    2 ^ 1 = 2 This divides into 90. (90/2 = 45)

    2 ^ 2 = 4 Nope

    2 ^ 3 = 8 Nope

    2 ^ 4 = 16 Nope

    2 ^ 5 = 32 Nope

    2 ^ 6 = 64 Nope

    2 ^ 7 = 128

    It looks like its 2 to the 1st power.

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