imstef1267
26.07.2019 •
Mathematics
)the count is trying to choose his new 7-digit phone number. since he is picky about his numbers, he wants it to have the property that the digits are non-increasing when read from left to right. for example, 9973220 is a valid phone number, but 9876545 is not. how many choices for a new phone number does he have?
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Ответ:
As i can not see the equation P=Principle and that is the best i can tell you