Question

find a remainder when diving 1!+2!+3!+....+15! by 30​

Answer 1

Answer:

3

Step-by-step explanation:

30 = 2*3*5

So,after 5! Everything is divisible by 30

= (1! + 2! + 3! + 4! + 5!) = 153

153 = 30*5 + 3

Remainder = 3