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in how many different ways can 4 students stand in a straight line if two of the students want to stand next to each other?

 Feb 11, 2021
 #1
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AB XX

BA XX

X AB X

X BA X

XX AB

XX BA      SIX ways to be next to each other   *  2 ways to fill XX =   12 ways

 Feb 11, 2021

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