Question

Найти значение выражения

Answer 1

С₈³P₆/A₇⁴=

С₈³=8!/((8-3)!·3!)=8!/(5!·3!)
P⁶ = 6!  
 A₇⁴=7!/(7-4)!=7!/3!
[8!/(5!·3!)]·6!  / (7!/3!)=(8!6!3!) /(5!3!7!)=(8!6!) /(5!7!)=8·6=48