How do you beat level 84 on 100 Floors?

Answer 1

First touch the red button to hear the sound. That is the sound of a correct action.

Touch a blue button to her the sound. That is the sound of a wrong action.

Then tap all three buttons (2 blue and 1 red to make purple triangle)

Then tap the red button (to make red line)

Then tap both blue buttons (to make blue plus sign)

Then tap all three buttons again.

If during any of these actions you hear the wrong sound you have to start from the top.