Question

Tim has 3 cats and 5 dogs. He gives two random animals away to his neighbour. How big is the probability that both of the random animals turn out to be cats.

Answer 1

\[\frac{3}{8}*\frac{2}{7} = \frac{3}{28}\]

Answer 2

or using combinations
\[\frac{3C2}{8C2} = \frac{3}{28}\]

Answer 3

Thanks!

Answer 4

What about the probability, that both of the animals are either cats or both of them are dogs?

Answer 5

add the probabilities ...p(both cat) +p(both dog)

Answer 6

3/8*2/7+5/8*4/7?

Answer 7

yep

Answer 8

Thanks. :)