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Write in terms of factorial:6 × 7 × 8 × 9 - Mathematics and Statistics

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Sum

Write in terms of factorial:
6 × 7 × 8 × 9

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Solution

6 × 7 × 8 × 9 = 9 × 8 × 7 × 6

Multiplying and dividing by 5!, we get

= `(9xx8xx7xx6xx5!)/(5!)`

= `(9xx8xx7xx6xx5xx4xx3xx2xx1)/(5!)`

= `(9!)/(5!)`

Concept: Concept of Factorial Function
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APPEARS IN

Balbharati Mathematics and Statistics 2 (Commerce) 11th Standard HSC Maharashtra State Board
Chapter 6 Permutations and Combinations
Exercise 6.2 | Q 4. (iii) | Page 75
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