+0  
 
+1
35
1
avatar+627 

Suppose that a and b are digits in base d > 6 such that . Find a_d - b_d in base d. thanks! smiley

MIRB16  Apr 7, 2018
Sort: 

1+0 Answers

 #1
avatar
0

63_7  +  66_7  = 162_7

 

6_7    -   3_7   = 3_7

 

Note: The first base I tried was base 7. I converted 162_7 to base 10 = 93. Then I tried 2 numbers that add up to 93. I tried 45 + 48 = 93. Then I converted 45 to base 7 =63. And similarly, converted 48 to base 7 = 66. Then added 63 + 66 (base 7) =162_7. That is how I arrived at the answer above.

Guest Apr 7, 2018
edited by Guest  Apr 7, 2018

26 Online Users

avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details