can anyone tell me about a good way to learn perms and combs (or maths in general) online with explanations and stuff thats like tutoring but for wackos like me who dont attend a tutoring centre
In how many ways can a boat crew of eight women be arranged if three of the women can only row on the bow side and two others can only row on the stroke side?
ik that the last digit must be 0 or 5, leaving us with the ss now being 8 values.
so p(div by 5) = 8*7*6*1 (if its 0) and the same for 5 (=336+
they both give 336, so wouldn't you just multiply 336 by 2 together to get the answer????