I'm trying to figure out how to do this permutation task.
So I have the numbers 1, 3, 4, 6, 7, 9 and I need to find out the possible amount of even six digit numbers I can make with them. The numbers can't repeat themselves.
So I know that the calculation would have only two possibilities on the units slot, like
x * x * x * x * x * 2
I thought I could just fill the remaining slots with the total amount minus one and decrease afterwards, so it'd be
5 * 4 * 3 * 2 * 1 * 2
Which gives me 240, but I'm not sure if that's correct.
Is that right?