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JEE Main2019Math
Q.

A group of students comprises of 5 boys and n girls. If the number of ways, in which a team of 3 students can randomly be selected from this group such that there is at least one boy and at least one girl in each team, is 1750, then n is equal to : 

  1. A

    24

  2. B

    27

  3. C

    25

  4. D

    28  

Solution

Number of ways of selecting three persons such that there is atleast one boy and atleast one girl in the selected persons

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