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Question 7 & 8 Review Exercise 6
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the digits $0,1,2,3,4,5,6,7,8,9$ if each number starts with $35$ and no-digits appear more than once? ====Solution==== If each telephone number starts with $35.$ It means have to fill the first two... can be formed with the given digits and each one starts with $25$ are: $$m_1 \cdot m_2 \cdot m_3 \cdot m
Question 9 & 10 Review Exercise 6
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than $1$ million. In this case number should not start with $0$, therefore the total numbers that do not start with zero. It can be formed using the given $7$