A person's memory is able to save 90% of what he does, 50% of what he sees and 10% of what he hears.
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A person's memory is able to save 90% of what he does, 50% of what he sees and 10% of what he hears.
A person's memory is able to save 90% of what he does, 50% of what he sees and 10% of what he hears.