+0  
 
0
359
4
avatar

Dogs in the GoodDog Obedience School win a blue ribbon for learning how to sit, a green ribbon for learning how to roll over, and a white ribbon for learning how to stay. There are $100$ dogs in the school. $\bullet$ $62$ have blue ribbons, $55$ have green ribbons, and $63$ have white ribbons. $\bullet$ $32$ have a blue ribbon and a green ribbon; $31$ have a green ribbon and a white ribbon; $39$ have a blue ribbon and a white ribbon. $\bullet$ $16$ have all three ribbons. How many dogs have not learned any tricks?

 Mar 7, 2020
 #1
avatar+24550 
+2

Similar      see if you can do the same with the numbers you have.....

https://web2.0calc.com/questions/help-please_25780

 Mar 7, 2020
 #2
avatar
0

Is this question from aops?

 Mar 7, 2020
 #4
avatar+24550 
+1

Venn diagram:

 

 Mar 7, 2020

23 Online Users

avatar