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Kendra bought 4 paintings and wants to hang them side by side on a wall in her bedroom. However, only 3 of the paintings will fit side by side on this wall. How many different ways can Kendra arrange 3 of the 4 paintings on the wall?

  • math -

    All you want is the number of permutations for 3 out of 4:

    4P3 = 4*3*2 = 24

    You can pick the first in 4 ways.
    Now there are 3 choices for the 2nd,
    and 2 left for the 3rd.

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