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devlian [24]
4 years ago
9

Number of different 5 digit combinations if successive digits msut be different

Mathematics
1 answer:
Maslowich4 years ago
4 0
For the first digit you have 10 options (0..9).
For each next digit you can't choose the same digit, so you have 9 options.

So number of combinations is 10*9*9*9*9 = <span>65610</span>
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Answer:

Option C. His answer is not correct, because the same can not be less than either attend

Step-by-step explanation:

we have

\frac{12}{15}+\frac{1}{10} =\frac{13}{25}

we know that

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\frac{1}{10}=0.10

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substitute

0.80+0.10=0.52 ----> is not true

therefore

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Step-by-step explanation:

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