Probability
What symbol is used to represent the sample space in probability?
S
In a network, what do the points (dots) represent?
Vertices (or nodes)
You buy an apple for $2 and pay with $5. How much change do you get?
$3
How many sides does a hexagon have?
6
What number is halfway between 20 and 50?
35
If the sample space is S={1,2,3,4,5,6}
what is n(S)?
6
What are isomorphic graphs ?
Graphs with same number of vertices, edges and same number of edge connections or degree.
A shirt costs $40. It’s 25% off. What’s the sale price?
$30
What is the perimeter of a rectangle 5 cm by 3 cm?
16 cm
If today is Wednesday, what day will it be in 10 days?
Saturday
If you have 3 red and 2 blue marbles, what’s the chance of picking a red?
3/5
If a vertex has 3 edges connected to it, what is its degree?
3
You earn $15 an hour and work for 8 hours. How much do you earn?
$120
A triangle has sides of 5 cm, 5 cm, and 8 cm. What type of triangle is it?
Isosceles triangle
I’m a number. Multiply me by 6 and you get 48. What am I?
8
A spinner has 8 equal sections. What’s the probability of landing on a number greater than 4?
4/8 or 1/2
A network has 6 vertices, each of degree 3. How many edges does it have?
6×3=18
18/2 = 9
You save $250, and it grows by 10% interest. How much is it now?
$275
A rectangle has a length of 12 cm and a width of 5 cm. What is its area?
60 cm²
If you triple a number and add 4, you get 19. What is the number?
5
You roll two dice. What’s the probability that the sum of two numbers is 7?
6/36 or 1/6
True or False: A network is connected if there is a path between every pair of vertices
True
A $60 item is discounted to $45. What percent discount is that?
25%
A circle has a diameter of 10 cm. What is its circumference? (Use π = 3.14)
31.4 cm
The sum of three consecutive numbers is 72. What are the numbers?
23, 24, 25