How am I supposed to know what order to hit the generators for this riddle?

In Panessa Studios, there's a room with generators that holds one of Riddler's riddle.
To get the riddle, the generators needed to be hit in a particular order. As far as I know, there weren't any hints to the order that should have been taken. Detective mode didn't reveal anything. I couldn't see any obvious hints in the posters. After a number of random guesses, I was eventually able to get it.
Starting from the left: 1 5 7 3 2 4 8 6
How was I supposed to know in what order to hit the generators?
Best Answer
It wasn't until after I solved it through trial and error did I recognize that the posters revealed the life span and that was the clue. During the initial process, it was baffling and I couldn't identify a single clue.
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How do you solve the riddle on top of panessa studios?
You'll find special Riddles to solve throughout each of the game's main regions. To solve each one, you'll need to scan in the nearby building, item or feature that you believe corresponds to the particular Riddle. To scan the object simply hold Up on the control pad.How do you solve the riddles in Batman Arkham Knight?
Don't step inside just yet; instead, fire an electrical charge at the generator in the floor to raise the elevator car to the upper level. Drop down to the bottom of the shaft then grapple up to the ledge directly above the barred door.How do I get out of the generator room Arkham Knight?
Once every hostile is out for the count, approach the generators along the wall. Access your Remote Electrical Charge and use it to power up all three generators. When the blast door to the left opens, run down the ramp and return to the Batmobile.How to Find all 5 Generators FAST in Five nights at Freddy's: Security Breach | FNAF DayCare Guide
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