Puzzle | 10 Balls in 5 Lines (original) (raw)

geeksforgeeks

Last Updated : 27 Apr, 2026

Given ten balls, the task is to place these 10 balls in five lines such that each line contains exactly 4 balls.

1-1

Check if you were right - full answer with solution below.

**Solution:

  1. Draw the star with a pentagon in the centre.
    2-1-1
  2. Place each ball at the intersection of extended lines of pentagon
    3-1-1
  3. Then place remaining balls on 5 vertices of pentagon.
    4-1-1
  4. Hence the solution to the "Ten balls in five lines" is:

The solution to the above puzzle can be obtained as:

5-1

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