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Number System practice question for Railways, SSC. Review the correct answer and explanation, then continue with related practice below.

Question language / प्रश्न भाषा

(2² + 4² + 6² + …… + 20²) = ? Explanation 6 = 385 Therefore, 4 × 385 = 1540

2² + 4² + 6² + ... + 20² का योग क्या है? व्याख्या: 2² + 4² + 6² + ... + 20² = (2×1)² + (2×2)² + ... + (2×10)² = 4(1² + 2² + ... + 10²) Now, 1² + 2² + ... + 10² = 10×11×21
Answer and explanation are free to read — no sign-in required.उत्तर और व्याख्या पढ़ने के लिए साइन-इन आवश्यक नहीं है।
A
770
B
1155
C
1540
✓
D
(385)²

Correct Answerसही उत्तर

C. 1540

Explanationव्याख्या

Explanation is not available for this older question yet. / इस पुराने प्रश्न की व्याख्या अभी उपलब्ध नहीं है।

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