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How many positive integers \(n\le 2009\) have the property that \(\lfloor{\log_2(n)}\rfloor\) is odd?

 Aug 10, 2019
 #1
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\(2-3\\ 8-15\\ 32-63\\ 128-255\\ 512-1023\\ 2+8+32+128+512 = 682\)

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 Aug 11, 2019
 #2
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thank you

Guest Aug 11, 2019

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