Р2/Р5 = 2! / 5! = 2/(2*3*4*5) = 1/(3*4*5) = 1/60
Ответ: 1/60.
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Р2/Р5 = 2! / 5! = 2/(2*3*4*5) = 1/(3*4*5) = 1/60
Ответ: 1/60.