Which term is wrong in the following series ? 8, 13, 21, 32, 47, 63, 83

निम्न शृंखला में कौन-सा पद गलत है ? 8, 13, 21, 32, 47, 63, 83

1. A13
2. B32
3. C47
4. D63

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Correct answer: C. 47

Explanation

Differences should rise by 3: 5, 8, 11, 14, 17, 20 → 8, 13, 21, 32, 46, 63, 83. So 47 is wrong (should be 46).

अंतर 3-3 बढ़ने चाहिए: 5, 8, 11, 14, 17, 20 → 47 की जगह 46 होना चाहिए।