Question

    Find the third proportion of √ 2, √ 7 and √ 21.

      
    A 6 Correct Answer Incorrect Answer
    B √6 Correct Answer Incorrect Answer
    C √3 Correct Answer Incorrect Answer
    D √42 Correct Answer Incorrect Answer

    Solution

    Using formula, a:b::c:d = √ 2: √ 7::?:√ 21 ? = √ 2 x √ 3 = √ 6

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