Skip to content / Đến nội dung
ThichHocToan.com

SMO 2006 Senior Round 1 Question 8

SMO · SMO 2006 Senior Round 1

Question 8

There are $n$ balls in a box, numbered $1,2,3,\ldots,n$. One ball is removed, and the sum of the numbers on the remaining balls is $5048$. If the removed ball has number $m$, find $m$.
  1. $1$
  2. $2$
  3. $3$
  4. $4$
  5. $5$