Hi, could some one help with this please. if possible could you show me what the venn or tree diagram should look like.

A cage holds two litres of rats. One litter comprises three females and four males, and the other comprises two females and six males. a random selection of two rats is made.

i need to find as a fraction , the probability that the two rats are

i) from the same litter

ii) of the same sex

iii)from the same litter and from same sex

iiii)from the same litter given that they are of the same sex

Thank you