exam Maths Puzzle Numerical Ability

A bag contains three red balls, five white balls and two green balls. If three balls are selected at random, with replacement, find the probability that the first two are red and the third one is green.

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exam Other Question

An investment of $5000 is made at an annual simple interest rate of 5.3%. How much additional money must be invested at an annual simple interest rate of 8.5% so that the total interest earned is 6.5% of the total investment? Solve (n)/(n-3)+n=(7n-15)/(n-3)