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In how many ways can first, second, and third prizes be awarded in a contest with 210 contestants?.
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If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
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Find the maximum value of p= 4x + 5y subject to the following constraints :
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The track team ran a mile and a quarter during their practice how many kilometers did her team runs?
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In how many ways can first, second, and third prizes be awarded in a contest with 210 contestants?....
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