**Weighing VII.**- Back to the Water and Weighing Puzzles

Given 27 table tennis balls, one is heavier than the others.

What is the minimum number of weighings (using a two-pan balance scale) needed to guarantee identifying the heavy one? Always. Of course, the other 26 balls weigh the same.

**This old topic is locked since it was answered many times. You can check solution in the Spoiler below.**

Pls visit New Puzzles section to see always fresh brain teasers.

Pls visit New Puzzles section to see always fresh brain teasers.