Question 755572
Q:
There are 6 positive and 8 negative numbers.four numbers are chosen at random,without replacement and multiplied.what is the probability that the product is a positive number?
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A:
probability = {{{(matrix(2,1,8,0))(matrix(2,1,6,4))/((matrix(2,1,14,4)))}}} + {{{(matrix(2,1,8,2))(matrix(2,1,6,2))/((matrix(2,1,14,4)))}}} + {{{(matrix(2,1,8,4))(matrix(2,1,6,0))/((matrix(2,1,14,4)))}}} = {{{highlight(505/1001)}}} or {{{highlight(0.5045)}}}