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3 years ago

PLEASE ANSWER QUICKLY!!

Mathematics

1 answer:

Masja [62]3 years ago

5 0

Answer:

224

Step-by-step explanation:

1st Digit - 9 (1 way)

2nd Digit - 2, 3, 5, 7 (4 ways)

3rd Digit - (10-2) ways

4th Digit - (10-3) ways

Therefore, the number of ways are 1 × 4 × 8 × 7

= 224 ways

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