book Maths Puzzle Numerical Ability

You have a coin bank containing dimes, nickles, and quarters. You grab a handful and find that you have 4 dimes, 7 nickles, and 3 quarters. Find the probability that each is the

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3. The real risk-free rate of interest is 3 percent. Inflation is expected to be 4 percent this coming year, jump to 5 percent next year, and increase to 6 percent the year after 3 sqrt(x)^2 = 4