Multiple Choice Questions on If radic 1 ndash p2 times 1 ndash q2 radic 3 2 then what is the value of radic 2p2 2q2 2pq radic 2p2........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

If radic 1 ndash p2 times 1 ndash q2 radic 3 2 then what is the value of radic 2p2 2q2 2pq radic 2p2...........

Quantitative Aptitude ( CCS) Algebra
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    If √[(1 – p2) × (1 – q2)] = √3/2, then what is the value of √[2p2 + 2q2 + 2pq] + √[2p2 + 2q2 – 2pq].

    1

    Incorrect Answer

    2

    Incorrect Answer

    √2

    Correct Answer

    √3

    Incorrect Answer
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    Explanation:

    √[(1 – p2) × (1 – q2)] = √3/2
    Put q = 0 and squaring both side,
    ⇒ 1 – p2 = ¾
    ⇒ p = ½
    √[2p2 + 2q2 + 2pq] + √[2p2 + 2q2 – 2pq]
     Put p = ½ and q = 0 here,
    ⇒ √(2 × 1/4) + √(2 × 1/4) = √2

    By: MIRZA SADDAM HUSSAIN
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