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    Question

    (8.6 × 8.6 + 4.8 × 4.8 + 17.2 × 4.8) ÷

    (8.62 – 4.82 ) = ? ÷ 19 What will come in the place of question mark (?) in the given expression?
    A 55 Correct Answer Incorrect Answer
    B 67 Correct Answer Incorrect Answer
    C 69 Correct Answer Incorrect Answer
    D 21 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, (8.6 × 8.6 + 4.8 × 4.8 + 17.2 × 4.8) ÷ (8.62 – 4.82 ) = ? ÷ 19 (8.62 + 4.82 + 2 × 8.6 × 4.8) ÷ {(4.8 + 8.6)(8.6 – 4.8)} = ? ÷ 19 (8.6 + 4.8)2 ÷ {(8.6 + 4.8) × 3.8} = ? ÷ 19 (13.4 ÷ 3.8) × 19 = ? ? = 67

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