Topic 1: Practice Test (Permutations and Combinations)

QuizΒ by Fred Spies

Mathematics
Thailand Core Curriculum

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26 questions
• Q1
Permutation or Combination? 5 applicants picked from a job out of 20 total applicants
Combination
Permutation
300s
• Q2
Permutation or Combination? The combinations for a locker
Permutation
Combination
300s
• Q3
Permutation or Combination? how many different ways to arrange the letters in MINOR
Permutation
Combination
300s
• Q4
Permutation or Combination? 5 card hand from a deck of 52
Permutation
Combination
300s
• Q5
You want to pick out 2 dogs from a litter of 8. How many combinations of dogs could you pick?
π,πππ, πππ
1,000
ππ
π,πππ
300s
• Q6
How many ways can 10 students be arranged on stage for a chorus concert?
π,πππ, πππ
ππ
π,πππ
1,000
300s
• Q7
You want 4 scoops of ice cream. There are 15 types of flavors. How many different combinations of ice cream can you have? (You canβt repeat the same flavor.)
ππ
1,000
π,πππ
π,πππ,πππ
300s
• Q8
How many different locker combinations are there for a 3-digit code? (Numbers can be used more than once.)
ππ
1,000
π,πππ
π,πππ, πππ
300s
• Q9
5! = ?
5 + 4 + 3 + 2 + 1 = 5
5 + 4 + 3 + 2 + 1 = 15
5 x 4 x 3 x 2 x 1 = 120
5 x 4 x 3 x 2 x 1 = 60
300s
• Q10
10P2 = ?
45
20
12
90
300s
• Q11
How many different ways of placing 4 balls in a row if we have 3 red and 1 blue?
20
24
4
12
300s
• Q12
How many ways can you arrange the letters SCHOOL?
280
360
300
120
300s
• Q13
In how many ways can the first five letters of the alphabet be arranged if each letter is used only once?
5 x 4 x 3 x 2 x 1 = 120
26 x 26 x 26 x 26 x 26 = 11881376
5 + 5 + 5 + 5 + 5 = 25
5 x 5 x 5 x 5 x 5 = 3125
300s
• Q14
Ashlyn needs to bring a dessert to her dinner party. If the bakery has eight pies to choose from, how many ways can Ashlyn choose three?
100
56
24
336
300s
• Q15
If nC2=28, then what is the value of n?
2
28
8
7
300s

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