Question

find the last nonzero digit of 234 factorial​

Answer 1

Answer:

Illustration of formula:

• For the numbers less than 10 we can easily find the last non-zero digit by above simple solution, i.e., first computing n!, then finding last digit. D(1) = 1, D(2) = 2, D(3) = 6, D(4) = 4, D(5) = 2, D(6) = 2, D(7) = 4, D(8) = 2, D(9) = 8.