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their 20 balls each of color red,blue,green n yellow. wat's is the minimum no. of ball u hav to take out so that all r of different color. ??
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2 men r playing tossing a coin. if one of them wins he gets 1$ frm the loser. at the end of a no. of games one of them had 3$ and the other won 3 times. how many games did they play?
If XYZ are there number then (1>=Y>X) and if the XY=Z than find out which is the condition that must be true?
A)Z=0
B)X C)Y>Z
D)Y
E)one more