Probability
What is the Probability of tossing a coin and getting Tails?
50%
What is the Range of these numbers -
1,1,2,3,5,8,10,12
11
Simplify the following ratio
24:36
2:3
How many litres of water are in a 40 kilolitre swimming pool?
40000L
What is the Probability of tossing 2 coins and getting 2 Tails?
25%
Find the Mode of the following numbers -
1,1,2,3,5,8,10,12
1
A plane burns 406 litres of fuel every 14 kilometres while in the air. Express the fuel consumption as a unit rate - Litres per Km
29L/Km
Name the factors of the number 24 - hint, there are 8 of them.
1, 2, 3, 4, 6, 8, 12, 24
A box contains balls numbered 5,10 and 20. There are different numbers of each ball in the box. The probability of selecting a ball numbered 5 is 0.25 and the probability of selecting a ball numbered 20 is 0.45.
If there are 100 balls in the box, how many are numbered 10?
30
Find the Median value of the following Stem and Leaf plot.
59
At Emporio, durian is sold for 76 cents per kilogram. At Greenery, each 5.5 kg durian is sold for $2.97. Which store is the best buy?
Greenery - 54 cents per kilogram
What is the perimeter of the following shape?
66cm
A group of 30 people is surveyed about their preference in movies. It is found that 18 prefer comedies, 14 like science fiction and 10 do not like either. Using this information, determine what value N represents in the diagram.
N=12
Using the Dot Plot provided, find the Mean of the Data.
17.14
The scale on the map of a public garden is 1:5000. How far apart on the map should two ponds be if the actual distance between the ponds is 350 m? Give your answer in centimetres.
7cm
Find the length of the string.
22.56m
Using the 2-way table provided, determine the Probability of finding a female who wishes to extend trading hours.
55/150 or 36.67%
A university wants to conduct a survey on the satisfaction of its students. There are 10 000 students in the university, and they want to survey a sample of 500 students. They decide to use stratified sampling, with three strata based on the student's major: Arts, Science, and Business. The proportions of students in each stratum are 40%,30% and 30% respectively. How many students should be sampled from each stratum?
Arts - 200 students
Science and Business - 150 students each
Use the taxable income table provided to determine how much tax someone earning $36810 should pay.
$2977.60
The average person sleeps for 8 hours a night. How many days does the average person spend asleep over 55 years? Assume there are 365 days in a year. Give your answer to the nearest whole day.
6692 days.