Question 366803
Mary purchased a package of 18 different plants, but she only needed 12 plants for planting. In how many ways can she select the 12 plants from the package to be planted?
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Ans: 18C12 = 18C6 = (18*17*15*14*13*12)/(1*2*3*4*5*6) = 18564
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Cheers,
Stan H.