I was doing a probability tree and you have to take the probability tree like this (1/52)*(1/51)+(1/52)(1/51) = 7.54147813E^-4

They want it in integer or fraction form. They tell me the answer is 1/1326, and when I do that I get my answer 7.54147813E^-4

However, I have no idea how to arrive at 1/1326. Math--Frac didn't work on my ti83 calculator neither did math--dec

This is so dumb because I know how to everything, but this last part is tripping me up.