Login

Search the forums now!

Welcome, Guest. Please login or register.

May 03, 2024, 08:11:48 am
Pages: [1]   Go Down

Author Topic: probability  (Read 353 times)  Share 

0 Members and 1 Guest are viewing this topic.

scatteam_2

  • Victorian
  • Trendsetter
  • **
  • Posts: 183
  • Respect: +1
probability
« on: May 19, 2011, 01:48:47 am »
0
draw two tickets (numbered 1,2,....x) from a hat with replacement
what is the probability the first is less than the second?
Logged

TrueTears

  • TT
  • Honorary Moderator
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 16363
  • Respect: +667
Re: probability
« Reply #1 on: May 19, 2011, 04:59:46 am »
0
Ignoring the trivial case where the first number you pick is x.

Then we have y(y-x) ways of picking tickets satisfying the condition for 1=<y<=x

theres a total ways of picking 2 tickets

so
Logged
PhD @ MIT (Economics).

Interested in asset pricing, econometrics, and social choice theory.
Pages: [1]   Go Up