Brain Test 2 Smith and Joe vs Who Level 13 Figure out a way to open that door

By Emir Lajev /
Question
Figure out a way to open that door.
Hints
Hint 1:
Pay attention to the clue on the door.
Step 1
Answer
There's a clue on the door. Tap on the left container one time, the middle one three times and the right one two times.

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