Multiple Choice Questions on Given a triangle PQR having 4 interior points on PQ 5 interior points on QR 5 interior points on RP ........... for CDS Exam Preparation

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Multiple Choice Questions

Given a triangle PQR having 4 interior points on PQ 5 interior points on QR 5 interior points on RP ...........

Quantitative Aptitude (CDS) Permutation & Combination
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    Given a triangle PQR having 4 interior points on PQ, 5 interior points on QR, 5 interior points on RP, find the number of the triangle that can be formed by joining these interior points as vertices.

    418

    Incorrect Answer

    475

    Incorrect Answer

    421

    Correct Answer

    523

    Incorrect Answer
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    Explanation:

    total no. of points = 4+5+6 = 15
    Total no . of  ? =  15C3  -  4C3  -  5C3  -  6C3
    =  455  -  4  -  1  -  20  =  421

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