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Question

If (4x)x=256the value of x is


  1. 2

  2. 2

  3. 4

  4. 16


Solution

The correct option is C

4


Given, (4x)x=256

256 = 44

(4x)x = 44

(am)n = (a)m×n

(4x×x = 44
(4)x = 44

x = 4

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