IBPS Government Jobs Exams Numerical Ability Probability

A bag has 4 red and 5 black balls. A second bag has 3 red and 7 black balls. One ball is drawn from the first bag and two from the second. The probability that there are two black balls and a red ball is:
A)14/45 B)11/45 C)9/54 D)7/15 E)None of these

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IBPS Other Question

Three workers with equal efficiency, can do a work in 10 days, but one of them having other employment can work only half time. In how many days the work can be finished?
A) 15 days B) 16 days C) 12 days D) 12.5 days The population of a colony was 3600 three years back. It is 4800 right now. What will be the population three years down the line, if the rate of growth of population has been constant over the years and has been compounding annually?
A) 6000 B) 6400 C) 7200 D) 9600 E) None of these