New SIDBI Grade A New Batch Starts on Nov 18

    Register

    Question

    In a group of 9 boys and 5 girls, 5 students have to be selected. In how many ways it can be done so that only 2 boys are included.

    A 360 Correct Answer Incorrect Answer
    B 340 Correct Answer Incorrect Answer
    C 350 Correct Answer Incorrect Answer
    D 420 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    =>9C2×5C3= [9!/(9 -2)! 2!] × [5!/(5 -3)! 3!] => [9!/7! 2!] × [5!/2! 3!] => 360 ways

    Practice Next