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The sum of all odd numbers from 1 to 64 inclusive is 4,096
There are 16 square numbers between 1 and 300: 2 to 17 inclusive. There is no square root of these numbers: only of their sum or product or average or some other operation.
Sum = ½ × number of numbers × (first number + last number) = ½ × (462 - 408 + 1) × (408 + 462) = ½ × 55 × 870 = 23,925
Well, honey, the sum of counting numbers from 1 to 20 is 210. You add up 1 + 2 + 3... all the way to 20 and you get your answer. So, go ahead and impress your friends with your newfound math knowledge.
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