Art of Problem Solving
AoPS Online
Math texts, online classes, and more
for students in grades 5-12.
Visit AoPS Online ‚
Books for Grades 5-12 Online Courses
Beast Academy
Engaging math books and online learning
for students ages 6-13.
Visit Beast Academy ‚
Books for Ages 6-13 Beast Academy Online
AoPS Academy
Small live classes for advanced math
and language arts learners in grades 2-12.
Visit AoPS Academy ‚
Find a Physical Campus Visit the Virtual Campus

2012 UNCO Math Contest II Problems/Problem 8

Revision as of 02:22, 17 October 2014 by Timneh (talk | contribs) (Created page with "== Problem == An ordinary fair die is tossed repeatedly until the face with six dots appears on top. On average, what is the sum of the numbers that appear on top before the six...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Problem

An ordinary fair die is tossed repeatedly until the face with six dots appears on top. On average, what is the sum of the numbers that appear on top before the six? For example, if the numbers $3, 5, 2, 2, 6$ are the numbers that appear, then the sum of the numbers before the six appears is $3+5+2+2=12$. Do not include the $6$ in the sum.


Solution

See Also

Retrieved from "https://artofproblemsolving.com/wiki/index.php?title=2012_UNCO_Math_Contest_II_Problems/Problem_8&oldid=64996"