$1^{2} + 2^{2} + \cdots + 20^{2} = ?$

এই অধ্যায়ের আরও প্রশ্ন

• C-13-Q154
• C-13-Q155The graph of an infinite arithmetic series with positive common difference grows —
• C-13-Q156In an arithmetic series the sum of any two terms equidistant from the first and last is —
• C-13-Q157SSC results pattern: student at , at , at — the -th time-step value is —
• C-13-Q158From SSC pattern in Q157, the number of students who get results exactly at pm (the th time step) is —
• C-13-Q159From the same SSC pattern, the cumulative number of students who know their results by pm equals —
• C-13-Q160From the same SSC pattern, the cumulative count by pm equals —
• C-13-Q150The th term of an arithmetic sequence with first term and common difference is —
• C-13-Q151The -th term of the sequence of natural numbers is —