find the remender of 2!+4!+6!.......+200! when divide by 18

• In 6! we will have 6*5*4*3*2*1 . so we have 6*3=18, hence 6! is completely divisible by 18 . so 7!, 8!, 9!, ....... 200! will be divisible by 18 . so reminder will come from 2!+3!+4!+5!. when (2!+3!+4!+5!) is divided by 18 the reminder is 8 .... So Reminder = 8
• 9 years agoHelpfull: Yes(1) No(0)