Multiple Choice Questions on The sum of the first n terms of the series zwnj zwnj 1 2 zwnj zwnj 3 4 zwnj zwnj 7 8 zwnj zwnj 15 16........... for NDA Exam Preparation

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Multiple Choice Questions

The sum of the first n terms of the series zwnj zwnj 1 2 zwnj zwnj 3 4 zwnj zwnj 7 8 zwnj zwnj 15 16...........

Mathematics (NDA) Algebra
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    The sum of the first n terms of the series ‌‌1/2+‌‌3/4+‌‌7/8+‌‌15/16+... is equal to

    2n−n−1

    Incorrect Answer

    1−2−n

    Incorrect Answer

    2−n+n−1

    Correct Answer

    2 n- 1

    Incorrect Answer
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