AP Police SI practice question
Find the missing number in the series: 6, 13, 27, 55, 111, ?
From a AP Police SI Reasoning practice set · Reasoning
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Correct answer: (D) 223
Each term is obtained by doubling the previous term and adding 1: 6×2+1=13, 13×2+1=27, 27×2+1=55, 55×2+1=111, 111×2+1=223.
हिंदी में प्रश्न
श्रृंखला में लुप्त संख्या ज्ञात कीजिए: 6, 13, 27, 55, 111, ?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 223
प्रत्येक पद पिछले पद को दोगुना करके 1 जोड़ने से प्राप्त होता है: 6×2+1=13, 13×2+1=27, 27×2+1=55, 55×2+1=111, 111×2+1=223।
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