С³₁₆+С²₁₅+С¹₁₄=(16!/3!·13!+15!/2!·13!+14!/13!)= (16!+15!·3+14!·6)/13!·3!=
=13!(14·15·16+3·14·15+14·6)/13!·3!=13!·6(7·5·16+7·5·3+14)/13!·3!=679
С⁴₁₆+С³₁₅+С²₁₄=(16!/4!·12!+15!/3!·12!+14!/2!·12!)=
4!·12!(2·5·13·14+4·13·14+12·13·14)/4!12!=
2·5·13·14+4·14·15+12·13·14=
1820+560+91=2471
С³₁₆+С²₁₅+С¹₁₄ 679 97
-------------------------= -----------------= --------
С⁴₁₆+С³₁₅+С²₁₄ 2471 353