Roll the dice five times and find the probability that there are exactly three times the same number of points?

Choose 1 from c6 (decide which one appears three times) * choose 3 from C5 (decide where the number appears in three positions) *(5*5) (all the remaining five digits in the remaining two positions can appear) /(6*6*6*6*6) (one * * has so many possibilities).

Remove the description, that is, c6 selection 1*c5 selection 3 * (5 * 5)/(6 * 6 * 6 * 6 * 6) = (125/648).

It should be right ~