To find out how many hours a tiger sleeps in seven weeks, we first need to calculate the total hours in seven weeks.
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Calculate the total number of hours in seven weeks: \[ 7 \text{ weeks} \times 7 \text{ days/week} \times 24 \text{ hours/day} = 7 \times 7 \times 24 = 1176 \text{ hours} \]
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Now, given that a tiger sleeps between 18 to 20 hours a day, we can calculate the range of hours a tiger would sleep in seven weeks.
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Minimum sleep (18 hours/day): \[ 18 \text{ hours/day} \times 7 \text{ days/week} \times 7 \text{ weeks} = 18 \times 49 = 882 \text{ hours} \]
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Maximum sleep (20 hours/day): \[ 20 \text{ hours/day} \times 7 \text{ days/week} \times 7 \text{ weeks} = 20 \times 49 = 980 \text{ hours} \]
Therefore, a tiger will sleep between 882 and 980 hours in seven weeks.