Question

Michiko is using the video game controller shown. The game Michiko is playing has various special moves that require pressing two lettered buttons at the sametime. How many 2-button special moves are possible with the controller?

Answer 1

`\text{ 21 combinations}`

Step-by-step explanation:

Here, we want to get the total number of possible combinations

There are a total of 7 buttons

The first has 6 options

The second has 5 options

The third has 4 options

The fourth has 3 options

The fifth has 2 options

The sixth has 1 option

The seventh has 0 options (it would have been pressed at same time with other buttons already)

Thus, the total number of possible combinations will be:

`6+5+4+3+2+1\text{ = 21 combinations}`