1! + 2! + ……. + 50!=?
a)3.1035*10^64 b)2.1021*10^65 c)3.1035*10^63 d)3.1035*10^62

• The solution is 3.1035* 10^64.....
  Explanation-
  50!+49!+48!+47!+...............+2!+1!
  now take 50! common, then we get
  50![1+(49!/50!)+(48!/50!)+........+(1/50!)]
  take only first 3, because other terms are so small hence neglected..
  now,
  50![1+(1/50)+(1/50*49)+(1/50*49*48)]
  value of 50! can be calculated with calculator.....
  after solving above we get the desired answer i.e. 3.1035* 10^64
• 12 years agoHelpfull: Yes(29) No(2)