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In which option is the sequence not an arithmetic progression although the first two differences are equal?किस विकल्प में क्रम समांतर श्रेणी नहीं है, हालांकि पहले दो अंतर बराबर हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (5, 9, 13, 20)(5, 9, 13, 20)
In (5,9,13,20), the first two differences are (4,4), but the third difference is (7). It is necessary to check all consecutive differences.(5,9,13,20) में पहले दो अंतर (4,4) हैं लेकिन तीसरा अंतर (7) है। सभी लगातार अंतर जांचना जरूरी है।
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