,FACTORIAL ,EXAMPLES #1_4 ,SIX FACTORIAL IS WRITT5 #6& #2_4 ,F\R FACTORIAL EQUALS TW5TY-F\R IS WRITT5 #4& .K #24 #3_4 ,FIVE FACTORIAL EQUALS FIVE "T F\R "TS ?REE "TS TWO "TS "O IS WRITT5 #5& .K #5@*4@*3@*2@*1 #4_4 ;N FACTORIAL EQUALS ;N "TS OP5 P>5!SIS ;N M9US "O CLOSE P>5!SIS "TS OP5 P>5!SIS ;N M9US TWO CLOSE P>5!SIS "TS ELLIPSIS "TS ?REE "TS TWO "TS "O IS WRITT5 N& .K N@*(N-1)@*(N-2)@* ''' @*3 @*2@*1 #5_4 ,OP5 FRAC;N ;N FACTORIAL OV] OP5 P>5!SIS ;N M9US ;K CLOSE P>5!SIS FACTORIAL CLOSE FRAC;N IS WRITT5 ?N&/(N-K)&# #6_4 ,OP5 FRAC;N FIVE FACTORIAL OV] "O FACTORIAL F\R FACTORIAL CLOSE FRAC;N IS WRITT5 #A ?5&/1&4&# #7_4 ,OP5 FRAC;N ;N FACTORIAL OV] OP5 P>5!SIS ;N M9US ;R CLOSE P>5!SIS FACTORIAL ;R FACTORIAL CLOSE FRAC;N IS WRITT5 ?N&/(N-R)&R&# #B