Quantitative Methods Q189

189An investor is considering investing in 8 bonds. According to a new investment policy of a company, an investor can invest in 3 bonds graded AAA, 3 bonds graded AA and 2 graded A. The investor can choose this combination from a pool of 30 bonds available in market. Of the 30 bonds 10 are AAA, 10 are AA and 10 are A. How many different ways are possible for an investor to invest considering the new policy?

Option : B
Explanation : The number of ways in which an investor can invest in 3 AAA, 3 AA and 2 A bonds is: 10C3 x 10C3 x 10C2 = 120 x 120 x 45 = 648,000.

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