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Question

The domain of the function f(x)=log2(log3(log4x)) is

A
(,4)
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B
(4,)
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C
(0,4)
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D
(1,)
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Solution

The correct option is B (,4)
f(x)=log2(log3(log4x))

log3(log4x)>0

log4x>30

log4x>1

x>41

x>4

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