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OpenStudy (anonymous):
Six letters (A, B, C, D, E, F) are randomly arranged in a line. The letters A and E, have to be placed next to each other. a) How many different arrangements are there ? b) What is the probability that the letters A and E are placed next to each other?
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ganeshie8 (ganeshie8):
For part a, you want the letters `A and E` to be together, so you tie them both in a bag
ganeshie8 (ganeshie8):
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