There are 15 yellow marbles in a jar. Yellow is the only color of marbles in the jar. You take out one yellow marble and do not replace it. Then you pick a 2nd yellow marble. In this case, how do you calculate the probability of picking 2 yellow marbles separately?

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?