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    Question

    ?= √(4 × ∛(16 × √(4 × ∛(16 ×…… ∝)) )

    )  What value should come in place of the question-mark (?) in the following questions:
    A 4 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 4√2 Correct Answer Incorrect Answer
    D 8 Correct Answer Incorrect Answer
    E 12 Correct Answer Incorrect Answer

    Solution

    ?= √(4 × ∛(16 × √(4 × ∛(16 ×…… ∝)) ) )  Let ? = x x= √(4 × ∛16x)   x²=4 × ∛16x  On cubing both the sides, x^6=64 ×16x  x^5= 64 ×16  x=4 

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