Algebra
Solve for x:
5x - 2 = 18
x = 4
How many different 4-digit passwords are possible?
104 or 10,000
If you flip two coins, what is the probability that one lands on heads and the other lands on tails?
1/4
When looking for outliers, what do we multiply our IQR by?
(before adding the total to Q3 and subtracting it from Q1)
1.5
A = {1, 3, 5, 7} B = {2, 5, 7, 9}
What is A intersect B?
{5}
Find f(-2)
f(x) = x2 - 2x + 8
f(-2) = 16
How many different poker hands contain four aces?
48
If you have a bag with 4 green skittles and 1 red skittle and you pull out two of them (without putting the first one back), what is the probability that both are green?
3/5 or 60%
Find the mean, median, and mode of the numbers:
{0, 1, 5, 5, 6, 12, 13, 14}
Mean: 7
Median: 5.5
Mode: 5
Nobody in this room is secretly a super-villain.
Solve for x:
3/x = 15/2
x = 2/5 or 0.4
How many different poker hands contain five cards of the same suit?
(Answer in terms of which numbers you'd multiply together)
52 * 12 * 11 * 10 * 9
If you are dealt a card from a standard deck, what is the probability that it is a heart and/or a king?
16/52 or 4/13 or ~30.77%
Give the five-number summary for the numbers:
{5, 1, 3, 6, 1, 2, 4}
(1, 1, 3, 5, 6)
If (the infamous criminal Salisbury Snake is home), then (their snake-car is in the driveway).
State the contrapositive of this logical implication.
If Salisbury Snake's snake-car is not in the driveway, then they are not home.
Solve for x:
x2 - 8 = 41
x = 7 AND x = -7
How many committees of 5 can be chosen from 8 people?
56
You flip a coin, roll a 6-sided die, and are dealt a card from a standard deck of cards. What is the probability that the coin is heads, the die roll is even, and the card is a face card or an ace?
1/13 or ~7.69%
Marcus is about to show you a box and whisker plot in another window. Give the five-number summary for the data set represented by that plot.
(1, 3, 4, 5, 8)
A = {h, e, a, r, t} B = {b, r, a, s, h}
State the largest set C such that C is a subset of both A and B
C = {h, a, r}
Solve for x:
2x + 2 = 8x
x = 1
Compute:
(10 - 2)! / (5!)(3!)
56
Imagine a game where you must pay $3 to roll two 6-sided dice. If the sum of the two rolled numbers is greater than 9, you win $19; otherwise, you win $1.
What is the expected value of playing the game once?
$1
The five-number summary of a set of data is (2, 7, 7, 10, 14)
What are the lowest and highest values that would not be outliers for this data set?
Lowest: 2.5
Highest: 14.5
What is the negation of the statement:
This morning I saw someone eat an egg and later I stopped to tie my shoe and I thought, "what an absolutely cool customer they were, just eating that egg like that."
Either I didn't see someone eat an egg this morning or I did not later stop to tie my shoe or I did not think, "what an absolutely cool customer they were, just eating that egg like that," or some combination of the three.