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  QUESTION OF THE DAY  
Question of the day
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Question of the Day (09-Mar-17)

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There are 10 balls of the same size but different colors. These balls have to be arranged in a row such that the red ball is always to the left of the green ball. The red ball and green ball need not always be next to each other. In how many ways can the balls be arranged?
OPTIONS
 
 1)9!
 2)
 3)
 4)5 × 9!
 5)None of these

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