You have 10 pairs of socks, six black pairs and four blue pairs, but they are not paired up. Instead they are all mixed up in a drawer. If you don't look, but just pull out socks, How many individual socks must you pull out to sure to have a pair of black socks?

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?