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steposvetlana [31]
2 years ago
9

I need to know math questions to study

Mathematics
1 answer:
malfutka [58]2 years ago
7 0

Answer:

69+69

Step-by-step explanation:

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Answer:

a) 1,757,600 different plates possible.

b) 1,404,000 different plates possible.

Step-by-step explanation:

The permutations formula is important to solve this question.

Permutations formula:

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P_{(n,x)} = \frac{n!}{(n-x)!}

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2 digits, each with 10 possible outcomes

So

T = 26*26*26*10*10 = 1757600

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(b) cannot be repeated:

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Two digits, from a set of 10. So

T = P_{(26,3)}*P_{(10,2)} = \frac{26!}{(26-3)!}*\frac{10!}{(10-2)!} = 1404000

1,404,000 different plates possible.

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