Konijntje's blog

Looking for Number of cases & Probability Problems & Materials.
By Konijntje, history, 7 years ago, In English

Recently, I felt lack of knowledge and techniques for solving various number of cases, probability and expected number problems.

I did not managed to solve a lot of problems including

(For the first three problems, I did not managed to solve problem in contest. And, I think it led to unsatisfying results.)

I really want to be good at this kind of problems, so could anyone give sufficient number of problems, or materials (including book) to improve my skill?

  • Vote: I like it
  • +11
  • Vote: I do not like it

»
7 years ago, hide # |
 
Vote: I like it +10 Vote: I do not like it

Read a book on combinatorics/probability. You can also check out my two blogs: one, two.

→ Reply
  • »
    »
    7 years ago, hide # ^ |
     
    Vote: I like it 0 Vote: I do not like it

    I skimmed through your blogs, and I think I know basic concepts of expected value.

    Can you recommend a book on combinatorics?

    → Reply
    • »
      »
      »
      7 years ago, hide # ^ |
       
      Vote: I like it +8 Vote: I do not like it

      Contribution technique and "ordered pairs" are more than basic concepts for sure. (but ofc. maybe you already know them)

      Idk about a particular book. I learned combinatorics and pbility in school&uni.

      → Reply