defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Sequences and Series Special Series
Find the sum of the series 22 + 42 + 62 + .... + (2n)2
1
\(\frac{1}{6}\: n(n+1)(2n+1)\)
2
\(\frac{2}{3}\: n(n+1)(2n+1)\)
3
\(n(n+1)(2n+1)\)
4
\(\frac{1}{3}\: n(n+1)(2n+1)\)