There are 20 balls red,blue or green.If 7 are green and sum of red and blue balls are less than 13.At most how many red balls are there A. 4 B. 5 C. 6 D. 7

Kunal

• Apr 26th, 2015

11 coz sum of red and blue balls are less than 13 i.e. 12.....hence, there could be a possibility of having 11 red balls and 1 blue ball

dav

• Dec 19th, 2014

7

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