There are 5 marbles of different colours, orange, purple, blue, green and red, in a bag.
Adam takes out 2 marbles.
How many different choices does he have?
|
orange |
purple |
blue |
green |
red |
orange |
|
✓ |
✓ |
✓ |
✓ |
purple |
|
|
✓ |
✓ |
✓ |
blue |
|
|
|
✓ |
✓ |
green |
|
|
|
|
✓ |
red |
|
|
|
|
|
Number of choices that Adam has
= 4 + 3 + 2 + 1
= 10
Answer(s): 10