In a jar there are 20 white balls, 24 green balls and 30 blue balls. How many balls must be taken out in order to make sure we have 21 balls of the same color?	Choose the correct choice from the following answers:
A) a)	23  B) b)	46  C) c)	57  D) d)	60  E) e)	67
Here, we need to find minimum number of marbles to be taken out to get 21 marbles of same color.   For a instance, if we take 19 white marbles 1st and followed by 20 Green and then 20 Blue.   Total will be   19 + 20+ 20= 
<gadget id="calculator">  19 + 20+ 20</gadget>
<output>59</output>
59 draws.   If we choose either Green or Blue next time. This will bring the total of either of these colored marble to 21.   So Minimum we need to take 59+1= 
<gadget id="calculator">59+1</gadget>
<output>60</output>
60 Times to get 21 marbles of same color(either Green or Blue).   Answer : d)	60.
<result>D</result>
In a jar there are 20 white balls, 24 green balls and 30 blue balls. How many balls must be taken out in order to make sure we have 21 balls of the same color?