The latest puzzle has gone viral.
It comes just after a screen of an iPhone became a viral sensation last week.
Tens of thousands of people debated: “How many threes can you see in this picture?”
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Social media users most often came up with 15, 19, or 21--but which one is correct?
There seems to be 19, but it depends on how you interpret the question.
The battery power and number of bars in the wi-fi logo were included by some users, but others argued that they shouldn’t count.
Others noted that the person’s name included several threes, while the time shown on the screen was 3:33 p.m.