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    Question

    What will come in the place of questions (?) mark in following questions.

    (6400 ÷ 160) × 2 + 5 = 21 + ?²

    A 8 Correct Answer Incorrect Answer
    B 10 Correct Answer Incorrect Answer
    C 14 Correct Answer Incorrect Answer
    D 12 Correct Answer Incorrect Answer
    E none Correct Answer Incorrect Answer

    Solution

    (6400 ÷160) ×2+5 = 21 + ?² 40 ×2+5 = 21 + ?² 85 = 21 + ?² ? ²  = 64 ? = 8

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