The human mind is truly amazing, no doubt about it. Still, it can get in its own way, as the following puzzle illustrates.
A bright first grader would find the following puzzle easier to solve than a bright well-schooled adult, given what the first grader has probably studied so far in school.
See if you can solve it (remember ... think like a first grader!):
Find the next three letters in this sequence:
O, T, T, F, F, S, S, E, N, ...
(Click here to go to Part 2.)
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