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[" 16A box contains two white,three blac...

[" 16A box contains two white,three black and four red balls.The number of ways in which we "],[" can select three from the box,If at least one white ball is to be included in the selection,is "],[[" 1.a perfect square 2."2^(4)," 3.divisible by "7," 4.divisible by "8]]

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