The total number of irrational terms in the binomial  expansion of 71/5−31/1060 is 

The total number of irrational terms in the binomial  expansion of 71/531/1060 is 

  1. A

    55

  2. B

    54

  3. C

    48

  4. D

    49

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    Solution:

    Given expression is   71/531/1060

    General terms of this expansion is Tr+1=(1)r 60Cr 71560-r  3 110r

    For rational terms r=0,10,20,30,40,50,60

    So, number of rational terms = 7

    Number of irrational terms = 61 -7 =54

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