Severity: Warning
Message: fopen(/home/answnniz/public_html/system/sessions/ci_session4bdf366f91c99c2a522b87dde009285d8b375abc): failed to open stream: Disk quota exceeded
Filename: drivers/Session_files_driver.php
Line Number: 176
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Severity: Warning
Message: session_start(): Failed to read session data: user (path: /home/answnniz/public_html/system/sessions)
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
There are 13 blue, 2 black, and 9 green markers in a box. You reach into the box and select two markers without replacement.
Determine the probability the first marker is black and the second marker is black.
Give the answer as a simplified fraction or in decimal form rounded to three places as necessary.