Tonya and lauren are designing a soccer uniform. they want to use two colors on the shirt. their choices are green, yellow, purple, blue and silver. how many ways can they choose two colors?

Tonya and Lauren can choose two colors 10 ways

Green.yellow      yellow,green     purple,green      blue,green     silver,green
green,purple      yellow,purple    purple,yellow     blue,yellow     silver,yellow
green,blue         yellow,blue       purple,blue         blue,purple    silver,purple
green,silver       yellow,silver      purple,silver       blue,silver      silver,blue

these are all the possible ways they can choose two colors.. i hope this helps