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  3. 1. how many 12-digit phone numbers can be created

1. How many 12-digit phone numbers can be created with the following restrictions: a) no restrictions b) first...

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Question

Basic Math

1. How many 12-digit phone numbers can be created with thefollowing restrictions:

a) no restrictions

b) first number cannot be zero or one.

c) no repeated numbers

2. Find the number of distinguishable permutations of theletters in the following words.

a) CALCULUS

b) PEPPER

c) MISSISSIPPI

Answer & Explanation Solved by verified expert
4.2 Ratings (569 Votes)
1 a The number of 12digit phone numbers can be createdwithout any restrictions Sinceeach digit can be any one of the 10 digits so total possibilitiesare 10 10 12 times    See Answer
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