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Question

23+47=? 
  1. 1621 
  2. 1521 
  3. 26121 
  4. 221 


Solution

The correct option is B 1521 
 23 and 47 are unlike fractions. To add them, we first convert them into equivalent fractions so that the denominators are the same.

i.e., 2×73×7=1421  

       4×37×3=1221

Now, 23+47=1421+1221=2621=1521. 

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