please solve it.

We have three hats, each of which contains 10 coloured stones: Hat1 contains 4 red stones, 5 green stones and 1 yellow stones. Hat2 contains 3 red stones, 2 blue stones and 5 yellow stones. Hat3 contains 1 red stones, 3 brown stones and 6 yellow stones. a) If we randomly select one stone from each box, what is the probability of selecting exactly one red stone? (1 mark) b) If we randomly select one stone from each box, what is the probability of selecting at least one red stone? (1mark) c) If we randomly select one stone from each box, what is the probability of selecting at least one yellow stone or exactly one red stones? (1 mark)