WorksheetsPermutation Quiz
Total questions: 10
Worksheet time: 7mins
The value of $$ P(n, n-1) $$ is:
n
n!
2n
2n!
The number of ways in which 8 students can be seated in a line is:
5040
50400
40230
40320
Permutation is also known as selection.
True
False
If $$ n = 7 $$ and $$ r = 4 $$, what is $$ nPr $$?
7!
$$ \frac{7!}{4!} $$
$$ \frac{7!}{(7-4)!} $$
$$ \frac{7!}{(7-4)!4!} $$
The value of $$ 6! $$ is:
24
120
720
8
Number of possible arrangements of all letters in the word "IMAGE" without repetition is:
25
120
125
3125
Find the number of 5-letter words formed using letters of "IMAGE" if repetition is allowed.
25
120
125
3125
In how many ways can the letters of the word "APPLE" be arranged?
120
48
60
30
The formula for the number of permutations of n distinct objects taken r at a time is:
$$ n! $$
$$ \frac{n!}{r!} $$
$$ \frac{n!}{(n-r)!} $$
$$ \frac{n!}{(n-r)!r!} $$
If repetition is allowed, the number of permutations of n things taken r at a time is:
$$ n! $$
$$ n^r $$
$$ r^n $$
$$ \frac{n!}{(n-r)!} $$
