::The sum of n-1 terms of powers of 2 lower than 2^n is 2^n-1. How do we prove this mathematically
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::The sum of n-1 terms of powers of 2 lower than 2^n is 2^n-1. How do we prove this mathematically
::The sum of n-1 terms of powers of 2 lower than 2^n is 2^n-1. How do we prove this mathematically