Last updated at May 29, 2018 by Teachoo

Transcript

Example 8 if 1/8! + 1/9! = ( )/10! , find x . 1/8! + 1/9! = /10! 10! (1/8! " + " 1/9!) = x 10!/8! + 10!/9! = x (10 9 8!)/8! + (10 9!)/9! = x 10 9 + 10 = x 90 + 10 = x 100 = x Hence x = 100

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Example 8 You are here

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Example 13 Important

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Example 23 Important

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Chapter 7 Class 11 Permutations and Combinations

Serial order wise

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.