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  • What is the 10th term from the end in expansion of <div class='qna-opti

What is the 10th term from the end in expansion of (1+x)^{30}

Option: 1

^{30}C_9\; x^9


Option: 2

^{30}C_9\; x^{21}


Option: 3

^{30}C_{20}\; x^{20}


Option: 4

^{30}C_{21}\; x^{9}


Answers (1)

best_answer

10th term from the end in the expansion of is (30-10+1)th term from beginning in the expansion of   

= 21st term from the beginning

=  ^{30}C_9\; x^{21}

option (B) is correct

Posted by

Sumit Saini

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