JEE Plances Class Answered

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Asked by niharikabojanapalli | 05 Jul, 2018, 13:48: PM

Expert Answer

begin mathsize 16px style straight T subscript straight n equals open parentheses straight n squared plus 1 close parentheses cross times straight n factorial equals open parentheses straight n open parentheses straight n plus 1 close parentheses minus open parentheses straight n minus 1 close parentheses close parentheses straight n factorial equals open parentheses straight n open parentheses straight n plus 1 close parentheses minus open parentheses straight n minus 1 close parentheses close parentheses straight n factorial equals straight n open parentheses straight n plus 1 close parentheses straight n factorial minus open parentheses straight n minus 1 close parentheses straight n factorial straight T subscript straight n equals straight n open parentheses straight n plus 1 close parentheses factorial minus open parentheses straight n minus 1 close parentheses straight n factorial straight T subscript 1 equals 1 open parentheses 2 factorial close parentheses minus 0 straight T subscript 2 equals 2 open parentheses 3 factorial close parentheses minus 1 open parentheses 2 factorial close parentheses straight T subscript 3 equals 3 open parentheses 4 factorial close parentheses minus 2 open parentheses 3 factorial close parentheses . . . straight S subscript 10 equals 1 open parentheses 2 factorial close parentheses minus 0 plus 2 open parentheses 3 factorial close parentheses minus 1 open parentheses 2 factorial close parentheses plus 3 open parentheses 4 factorial close parentheses minus 2 open parentheses 3 factorial close parentheses plus....... plus 9 open parentheses 10 factorial close parentheses minus 8 open parentheses 9 factorial close parentheses plus 10 open parentheses 11 factorial close parentheses minus 9 open parentheses 10 factorial close parentheses straight S subscript 10 equals space 10 open parentheses 11 factorial close parentheses straight T subscript 10 over straight S subscript 10 equals 101 over 110 equals straight a over straight b straight b minus straight a space equals space 9 end style

Answered by Arun | 09 Aug, 2018, 10:55: AM

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