Find the decimal expansion of the number with the 3n bit binary expansion (101101....101101)_2 (so that the binary expansion is made of n copies of 101). [Hint: Use the formula for the sum of the terms of a geometric progression.]

Find the decimal expansion of the number with the 3n bit binary expansion (101101....101101), (so that the bi- nary expansion is made of n copies of 101). [Hint: Use the formula for the sum of the terms of a geometric pro- gression. |