Put these fractions in order from least to greatest 4/5,3/5and 1/5

1/5, 3/5, 4/5, think of it as since they all have the same denominator, it’s just a matter of figuring out which numerator is larger than which...think of it as if you started with 5 slices of pizza, and you have x number left, order them from least to greatest with the number of slices you have left (1,3,4)

I’m not absolutely sure but i think it’s 7x6x5x4x3x2=5040 because as the first character you can take any of the 7 given then you are left with 5 then 6 then 4 etc.