Answer to Question #177921 in Combinatorics | Number Theory for sdf

Question

1.If n and b are positive integers greater than 1 and n are divisible by b, what

is the last digit of nb? Explain.

Answer 1

The last digit of nb can be different:

For example:

If n=10 and b=5 the last digit of nb is 0

If n=121 and b=11 the last digit of nb is 1

If n=6 and b=2 the last digit of nb is 2

and so on