1. How many natural numbers are between the square roots of 8 & 80?Six. (SQRT 8 is just less than 3, and SQRT 80 is not quite 9. So the natural #s between them would be 3,4,5,6,7, & 8.)
2. What’s the largest three-digit number divisible by both 7 & 9?945
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BONUS:How many nonzero perfect squares can be displayed on an eight-digit calculator? 9999
