In how many different orders can four friends stand in a line for a photo?
Answer and explanation
Correct answer: D. 24 orders
- Step 1: The number of permutations of 4 people is 4!. Step 2. 4! = 4 x 3 x 2 x 1 = 24. Answer: 24 orders. Why not the others: A friend cannot appear twice, and the choices multiply, not add.
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