а) 5!*(1+6+6*7) 5!* 49 49 1 ___________ = ____________ = _________ = _____ = 1/6 7!*(8-1) 5!*6*7*7 6*49 6 б) 16!* ( 17*18-17*17-16) 16!* (17*(18-17)-16) 16!* (17*1-16) 16!*1 1 ___________________ = _________________ = ____________ = _____ = ____ = 1/16 16!* (17-1) 16!* 16 16!*16 16!*16 16