+0  
 
+1
1253
2
avatar+4623 

When a positive integer is expressed in base 7, it is \(AB_7\)  , and when it is expressed in base 5, it is \(BA_5\)   . What is the positive integer in decimal?

 Mar 20, 2017
 #1
avatar+37170 
+2

Seventeen.

 Mar 20, 2017
 #2
avatar+33661 
+4

325,  237,  (1710)

 Mar 20, 2017

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