Probability - Quantitative Aptitude (MCQ) questions for Q. 110

Q.  A class consists of 15 girls and 10 boys. Three students are to be randomly selected. Find the probability that one boy and two girls are picked.
- Published on 15 Jun 15

a. 1/50
b. 3/25
c. 21/46
d. 25/122

ANSWER: 21/46

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    Discussion

  • gokuboi   -Posted on 26 May 21
    every boy's dream
  • Prasun Jaiswal   -Posted on 12 Aug 17
    We get the answer by
    Total = 25C3 ;
    1 Boy from 10 = 10C1;
    2 Girls from 15 = 15C2;
    therefore we now find the given probability as follow:
    (10C1 x 15C2)/25C3;
    = 21/46; Answer

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