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zysi [14]
3 years ago
5

Help please this is a test and it’s already frustrating

Mathematics
1 answer:
makvit [3.9K]3 years ago
5 0

Answer:

-70

Step-by-step explanation:

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504 ways

Step-by-step explanation:

We know that since Sonji wants the last digit to be 7 and that numbers don't repeat, there are only 9 possibilities for the first digit, 8 possibilities for the second digit, 7 possibilities for the third digit, and 1 possibility for the fourth digit (which is 7).

Using the Fundamental Counting Principle, there are 9*8*7*1 = 504 ways for the remaining digits to be chosen.

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