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Question

Express 1681 as power of a rational number.
  1. (49)2
  2. (49)2
     
  3. (49)2
     
  4. (49)2
     


Solution

The correct options are
A (49)2
D (49)2
 
1681=(4)2(9)2=(49)2    (ambm=(ab)m)
Also, 42=(4)2(49)2=(49)2

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