In the rally point scoring method now widely adopted in volleyball, either team can score a point by winning the rally after a serve, regardless of who serves the ball. The first team to earn 25 points wins the set, except that a team must win by at least two points — that is, if the score is 24-24, then the final score must be 26-24, 27-25, 28-26, etc.

Assume two evenly matched teams are playing each other.

To at least four significant figures, what is the expected number of rallies (total points scored) per set?

Random number sequence |
Posted on 2011-04-20 by Math Man (Solution Posted, 2 Comments)

Powerful Digit | Rating: 4.00
Posted on 2011-03-29 by Jer (No Solution Yet, 12 Comments)

Domino Polygons |
Posted on 2011-03-14 by Jer (No Solution Yet, 5 Comments)

Never prime! (3) | Rating: 5.00
Posted on 2011-02-25 by K Sengupta (Solution Posted, 1 Comments)

Failure to Communicate |
Posted on 2011-02-04 by Charlie (Solution Posted, 2 Comments)

(sod(x))^2 = x+2 | Rating: 5.00
Posted on 2011-01-26 by K Sengupta (Solution Posted, 3 Comments)

Reloading the Dice | Rating: 3.00
Posted on 2011-01-20 by Brian Smith (Solution Posted, 10 Comments)