A mortgage, hope this helped :)
No, permutation is for finding out orders like how many ways can you arange the letters x,y,z the answer is 6, because xyz, xzy, yxz, yzx, zyx, zxy
permutations are a branch of probability
probability is (desired outcomes)/(total possible outcomes) or
10/total people registered
As you can see in this diagram, the answer is A, the ten-thousands place.
It would be: 41/16.4 * 100 = 4100/16.4 = 250%