C-13-Q052mediumsingle_mcq

The sum of the first $n$ terms of $1 + 3 + 5 + 7 + \cdots$ is —

This is the sum of the first $n$ odd numbers, which always equals $n^{2}$ (e.g. $1+3+5=9=3^2$ ).

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এই অধ্যায়ের আরও প্রশ্ন

C-13-Q053The sum of the first terms of is —
C-13-Q054
C-13-Q055
C-13-Q056If the th term of an arithmetic series is , the sum of the first terms is —
C-13-Q057If the th term of an arithmetic series is , the sum of the first terms is —
C-13-Q058The sum of the first terms of is . The value of is —
C-13-Q059The sum of the first terms of is . The value of is —
C-13-Q060If the sum of the first terms of a series is , the series is —
C-13-Q061If the sum of the first terms of a series is , the sum of the first terms is —

\dfrac{n(n+1)}{2}

2n - 1

C-13-Q062