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25 Cards in this Set
- Front
- Back
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Rate A per B
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QA / QB
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Rate A per B
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QA / QB
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Average Rate
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Total A / Total B
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Average Rate
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Total A / Total B
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RATE CHART
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R T D
P1 P2 Total |
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RATE CHART
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R T D
P1 P2 Total |
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Combined Work for 2 workers
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Total time = AB / A + B
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Combined Work for 2 workers
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Total time = AB / A + B
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Combined work for many workers
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1 / Total = 1 / A + 1 / B + 1 / C +....... 1 / N
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Combined work for many workers
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1 / Total = 1 / A + 1 / B + 1 / C +....... 1 / N
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Overlapping Sets
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G1 + G2 - B + N = Total
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Overlapping Sets
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G1 + G2 - B + N = Total
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Overlapping Sets Chart
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inG1 notinG1 Total
inG2 notinG2 Total |
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Overlapping Sets Chart
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inG1 notinG1 Total
inG2 notinG2 Total |
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Combinations Formula
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use when the selection is unordered
nCk = n! / k!(n-k)! |
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Combinations Formula
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use when the selection is unordered
nCk = n! / k!(n-k)! |
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Permutation Formula
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use when the selection is ordered
n! / (n-k)! |
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Permutation Formula
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use when the selection is ordered
n! / (n-k)! |
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Probability Approaches
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1. Multiply the probabilities of individual events.
2. Subtract the probability of the undesired outcomes from the total. 3. Solve for the probability of one possible outcome, then multiply by all the permutations of that outcome. 4. = number of desired outcomes / total number of possible outcomes 5. If the probability is simple, just count the number of possible outcomes. |
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Probability Approaches
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1. Multiply the probabilities of individual events.
2. Subtract the probability of the undesired outcomes from the total. 3. Solve for the probability of one possible outcome, then multiply by all the permutations of that outcome. 4. = number of desired outcomes / total number of possible outcomes 5. If the probability is simple, just count the number of possible outcomes. |
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Percent Problems
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Percent x Whole = Part
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Percent More
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total price = item + (% x item)
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Percent Less
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total price = item - (% x item)
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Percent Increase
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Amount of increase / Original whole
all x (100%) New whole = original whole +or- amount of change |
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Percent Decrease
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Amount of decrease / Original whole
all x (100%) New whole = original whole +or- amount of change |
