Ответ:

  1. 5! = 5·4·3·2·1 = 120.
  2. 3!+4! = 6+24 = 30.
  3. 5!−4! = 120−24 = 96.
  4. 2!·4! = 2·24 = 48.
  5. 6!/5! = 6.
  6. 100!/98! = 100·99 = 9900.
  7. 6!/(4!·2!) = (6·5)/(2·1) = 15.
  8. 50!/(47!·3!) = (50·49·48)/(3·2·1) = 19600.
  9. (7!+6!+5!)/(8!−7!) = 5880/35280 = 1/6.
  10. (9!+2·9!+3·9!)/10! = 6·9!/(10·9!) = 3/5.