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When a pair of balanced dice are rolled...

When a pair of balanced dice are rolled .What are the probability of getting the sum.
(i)7(ii)7 or 11(iii)11 or 12

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The correct Answer is:
`(1)/(2),(2)/(9),(1)/(12)`
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PREMIERS PUBLISHERS-INTRODUCTION TO PROBABILITY THEORY-PROBLEMS FOR PRACTICE (ANSWER THE FOLLOWING QUESTIONS)
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