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Permutations and combinations
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Anu
Bala
Chitra
Dev
Esha
Farid
1
The counting rule
2
3
4
5
Choices multiply
2
Counting by listing
1
2
3
4
3
Numbers from digits
1
2
3
4
5
6
4
Arranging in a line
1
2
3
4
5
6
7
8
5
Choosing
1
2
3
4
5
6
7
6
Counting in pictures
1
2
3
4
5
7
Sharing out
1
2
8
Clever counts
1
2
3
4
5
9
Round a table
1
2
10
From counting to chance
1
2
3
4
11
The exam room
1
2
3
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