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tigry1 [53]
3 years ago
10

10 points please help​

Mathematics
1 answer:
lawyer [7]3 years ago
6 0

Answer:

\frac{14}{55}

Step-by-step explanation:

note that

n! = n(n - 1)(n - 2) .... × 3 × 2 × 1

Given

\frac{8!9!}{5!12!}

Cancel the terms from 8! ( 5 × 4 × 3 × 2 × 1 ) with the same terms from

5! ( 5 × 4 × 3 × 2 × 1 ) leaving

8 × 7 × 6 = 336 on the numerator

Similarly

Cancel the terms from 9! and 12!

leaving 12 × 11 × 10 = 1320 on the denominator, thus simplifies to

\frac{336}{1320}

= \frac{14}{55}

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