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Question

Find the value of x if  2x3=1.
 
  1. 3
  2. 2
  3. 1
  4. 0


Solution

The correct option is A 3
Given, 2x3=1
We know, for any non-zero integer 'a', a0=1.
2x3=20
Since the powers of 2 in the LHS and RHS are equal and the bases are the same, the exponents must be equal.
x3=0x=3

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