This task is about combinations.
Issa was arranging letters and numbers in different combinations.
She found that the letters a and b can only be combined in two ways, ab and ba,
but if there were three letters, she could combine them in six different ways.
|
a) Write down all the different ways Issa could combine all three of the letters a, b, and c in the box below.
|
|
|
b) Using a pattern Issa then wrote down all the different combinations of the numbers 1, 2, 3, and 4.
Fill in the six missing combinations in the spaces below.
|
|
1234
|
1243
|
1324
|
1342
|
1423
|
1432
|
|
2134
|
2143
|
2314
|
2341
|
2413
|
2431
|
|
3124
|
3142
|
___________
|
___________
|
3412
|
___________
|
|
4123
|
4132
|
___________
|
4231
|
___________
|
___________
|