а) 15!/14! = 15. б) 8!/10! = 1/(10*9) = 1/90. в) 42!/40! = 42*41 = 1722. г) 16!/(14!*3!) = (16*15*14!)/(14!*6) = 16*15/6 = 40. д) 28!/(4!*26!) = (28*27*26!)/(24*26!) = 28*27/24 = 91/2 = 45.5. е) 45!/(43!*3!) = (45*44*43!)/(43!*6) = 45*44/6 = 15*22 = 330.