Question
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Answer (Detailed Solution Below)
Option 2 : 42 / 42
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Detailed Solution
सही उत्तर 42 / 42 है।
Key Points
Helpful?
Question:
Find the missing number in the series: 2, 6, 12, 20, 30, ? / श्रेणी में लुप्त संख्या ज्ञात कीजिए: 2, 6, 12, 20, 30, ?
1.
40 / 40
2.
42 / 42
3.
44 / 44
4.
36 / 36
Correct Answer: 42 / 42
Differences are 4, 6, 8, 10, so the next difference is 12: 30 + 12 = 42 (the series is n(n+1) for n = 1 to 6). / अंतर 4, 6, 8, 10 हैं, अतः अगला अंतर 12 होगा: 30 + 12 = 42 (यह n = 1 से 6 के लिए n(n+1) श्रेणी है)।
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