GRE Exam Numerical Ability Probability

Two beads are to be independently and randomly selected, one from each of two bags. If 3/7 of the beads in one bag and 5/7
of the beads in the other bag are green, what is the probability that both beads selected will be green?

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GRE Other Question

What is the cost, in cents, of using a certain fax machine to send n pages of a report if the total cost for sending the first k pagers is r cents and the cost for sending each additional page is s cents? (Assume that n > k.)
(A) r + s (n - k) (B) r + s (n + k) (C) rs(n + k)
(D) kr + s(n - k) (E) kr + ns The distance from the Y-axis to point K is 1/3 of the distance from the X-axis to point K. If the coordinates of K are (-3, y), what is the distance between point K and X-axis?
A. 1/2 B. 1 C. 3 D. 4.5 E. 9