ashishdubey

As a part of your savings plan at work, you have been depositing $250 per quarter in a savings account earning 8% interest compounded quarterly for the last 10 years. You will retire in 15 years and want to increase your contribution each year from $1,000 to $2,000 per year, by increasing your contribution every four months from $250 to $500. Additionally, you have just inherited $10,000, which you plan to invest now to earn interest at 12% compounded annually for the next 15 years. How much money will you have in savings when you retire 15 years from now?

A box contains 5 white and 4 black balls. Two balls are picked together at random from the box.

What is the probability that these two balls are of different colours ?

1.          1/2
2.          5/18
3.          5/9
4.          1/3