Steps to solve pr0bability problems
- Identify events for which probability is to be determined asked in the question.
- Calculate total number of possible outcomes (items)
- Calculate probability of each event
- Add probability of each event (if it is required)
A box is filled with cubes of different colors. There are 40 White cubes, 24 Green, 12 Red, 24 Golden, and 20 Blue cubes. If you have to select a cube without looking into the box, what is the Probability that you will pick a White or a Blue cube?
Step 1 See that you have to determine probability of 2 events
(a) Picking a White cube
(b) Picking a Blue cube
Step 2 2 total numbers of cubes
Step 3 Find the probability of picking a White
Find the probability of picking a White
Step 4 Now add the two probabilities together
Thus probability that you will pick a White or a Blue cube is 1/2
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- COMPOUND INTEREST
M = P( 1 + i )n
M is the final amount including the principal.
P is the principal amount.
i is the rate of interest per year.
n is the number of years invested.
Applying the Formula
Let’s say that I have $1000.00 to invest for 3 years at rate of 5% compound interest.
M = 1000 (1 + 0.05)3 = $1157.62.
You can see that my $1000.00 is worth $1157.62.
Area and Perimeter of a Triangle, Rectangle, Parallelogram, Trapezoid and Circle
Surface Area and Perimeter of a Triangle