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morning evening time difference , 2880717 minutes

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by chayanika » Thu Oct 09, 2008 2:50 am
answer is 6:24 ?
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by Ian Stewart » Thu Oct 09, 2008 6:13 am
When you subtract, the last digit of the subtraction comes from the subtraction of the last digits. 6:27 - 2,880,717 minutes must end in a 0, and there's only one answer choice which ends in 0 - 6:30.
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