1.650796 x 10136
1.2688693e+89
x = 90 y = 89
The value of 9 factorial plus 6 factorial is 363,600
It is 4060.
factorial of -1
The answer is too long to type on here but you can get a solution on your TI-89 go to Math 7:Probability 1:! then type in 120! 120!=66895029134491270575881180540903725867527463331380298102956713523016335.. =(roughly) 6.6895x10198
Factorial 6 = 720
27 factorial = 10,888,869,450,418,352,160,768,000,000
1 factorial = 1
Factorial 65 = 8247650592082470666723170306785496252186258551345437492922123134388955774976000000000000000
34 factorial = 295,232,799,039,604,140,847,618,609,643,520,000,000.
Zero factorial = 1