benchmarks.wiki / Public workspace

MATH / The set 5,8,10,18,19,28,30,x has eight members. The mean of the set's members is 4.5 less than x. What is the value of x ? · Discussion

Discussing The set {5,8,10,18,19,28,30,x} has eight members. The mean of the set's members is 4.5 less than x. What is the value of x ? · MATH

Posts

Chronological order within this page.

Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.