A first grade teacher uses ten playing cards, each numbered from 1 to 10, to teach her students to order numbers correctly. She has students choose four flash cards randomly, then arrange the cards in ascending order. One day, she removes the cards '2' and '4' from the deck. On that day, how many different correct arrangements of four randomly selected cards are possible?	Options.
A) 70  B) 60  C) 50  D) 40  E) 30
proble of combination 8C4 = 8!/4!*(8-4)! = 8*7*6*5*4!/4!*4! 8 /4 *(8-4)= 
<gadget id="calculator">8 /4 *(8-4)</gadget>
<output>8</output>
8*7*6*5*4!/4!*4!=70   70
<result>A</result>
A first grade teacher uses ten playing cards, each numbered from 1 to 10, to teach her students to order numbers correctly. She has students choose four flash cards randomly, then arrange the cards in ascending order. One day, she removes the cards '2' and '4' from the deck. On that day, how many different correct arrangements of four randomly selected cards are possible?