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OpenStudy (anonymous):
Marion put one penny in a bank. Each day after that she put in the bank double the number of pennies from the previous day until the bank was full. If the bank was full on the 8th day, when was the bank only half-full?
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OpenStudy (anonymous):
1 -> 2 -> 4 -> 8 -> 16 -> 32 -> 64 -> 128 1+2+4+8+16+32+64+128 = 255 255 divided by 2 = 127.5 the bank was only half full on the 8th day? i think
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