John needs 4 balls out of 10 balls.How many ways are possible? Answers:
A) 1050  B) 220  C) 630  D) 540  E) 720
The possible way is 106304   106304=10!/6!*4!=10*9*8*7*6!/6!*4*3*2*1   =630 ways   Ans:option 630
<result>C</result>
John needs 4 balls out of 10 balls.How many ways are possible?