Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Lv 2699 points

jt.totty

Favorite Answers33%
Answers55

  • Math's Probability Question.?

    I need help on the following probability question. NOTE: I would like to know how you obtain the answer, not just the answer, because I already know the answer's (in the back of the book).

    Question:

    - A cage holds two litters 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.

    Find, as fractions, the probabilities that the two rats are:

    (i) from the same litter - (I can do this one - don't need explanation)

    (ii) of the same sex - (Can do this one as well).

    (iii) from the same litter and of the same sex - help! :(

    (iv) from the same litter given that they are of the same sex (help!).

    1 AnswerMathematics1 decade ago