Use modular arithmetic to determine each of the following.

(a)

Disregarding A.M. or P.M., if it is now 1 o’clock, what time will it be 63 hours from now?
_____ o’clock

(b) Disregarding A.M. or P.M., if it is now 1 o’clock, what time was it 64 hours ago?
_____ o’clock

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