When you hear a phone number and write it down, your brain uses short term memory.
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When you hear a phone number and write it down, your brain uses short term memory.
phone number, grocery list, appointment, birthday, address, to pay bills, people's names
Not too tough . . . Any number that you can completely write down on paperis a rational number.
-- Write down the number of kwh -- Write down the number of square feet -- Divide the first number by the second number. -- The answer is mathematically correct, but doesn't appear to have any physical significance in the real world.
100.00001
All the decimals that you can completely write down are rational. An irrational number has a decimal that never ends, so you can't write it down.