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Answer (Detailed Solution Below)

Option 1 : 91

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Detailed Solution

सही उत्तर 91 है।

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PrepSnapprepsnap.in • Part -A

Question:

Find the missing number in the series: 1, 5, 14, 30, 55, ? / श्रृंखला में लुप्त संख्या ज्ञात कीजिए: 1, 5, 14, 30, 55, ?

1.
91
2.
89
3.
93
4.
87

Correct Answer: 91

Successive differences are perfect squares: 4, 9, 16, 25. The next difference is 36, so 55+36=91. / क्रमागत अंतर पूर्ण वर्ग हैं: 4, 9, 16, 25। अगला अंतर 36 होगा, अतः 55+36=91।

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