In how many ways can four students be selected out of twelve students i) if two particular students are not included at all
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If two particular student are not included
total students= 10
we have to choose = 4
total ways = 10C4 = 10×9×8×7/(1×2×3×4) = 210
total students= 10
we have to choose = 4
total ways = 10C4 = 10×9×8×7/(1×2×3×4) = 210
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