Question 852614
P(10,3) = 10!/(10-3)!

P(10,3) = 10!/(7)!

P(10,3) = (10x9x8x7x6x5x4x3x2x1)/(7x6x5x4x3x2x1)


P(10,3) = 10x9x8


P(10,3) = 720 groups can be selected.