New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    In how many ways can a group of 2 boys and 2 girls be

    made out of a total of 6 boys and 4 girls?
    A 120 ways Correct Answer Incorrect Answer
    B 90 ways Correct Answer Incorrect Answer
    C 180 ways Correct Answer Incorrect Answer
    D 75 ways Correct Answer Incorrect Answer
    E 140 ways Correct Answer Incorrect Answer

    Solution

    Required number of ways = 6C2 × 4C2 = 6!/(4! ×2!) × 4!/(2! ×2!) = 15 × 6 = 90 ways

    Practice Next

    Relevant for Exams: