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(Querist)
09 October 2013 a person has 8 friends. the number of ways in which he may invite one or more of them to a dinner ? 1.250 2.255 3.200
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@VaibhavJ

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@VaibhavJ (Expert)
09 October 2013 hi

Ans is 8!

Thanks//VaibhavJ
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Ganeshbabu K

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Ganeshbabu K (Expert)
10 October 2013 Answer is 255
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=8C1+8C2+8C3+8C3+8C4+8C5+8C6+8C7+8C8
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