what is the units digit of ( 5 ! * 4 ! - 3 ! * 5 ! ) / 120
"( 5 ! * 4 ! - 3 ! * 5 ! ) / 9 = 5 ! ( 4 ! - 3 ! ) / 120 = 120 ( 24 - 6 ) / 120 = 18 units digit of the above product will be equal to 8 answer b"
divide(add(multiply(factorial(5), factorial(4)), multiply(factorial(5), factorial(5))), 5)