SSC CPO practice question
What should come in place of '?' in the given series? 4, 9, 25, 49, ?
From a SSC CPO Reasoning practice set · Reasoning
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Correct answer: (C) 121
The series 4, 9, 25, 49 consists of squares of consecutive prime numbers: 2², 3², 5², 7². The next prime is 11, so the missing term is 11² = 121.
हिंदी में प्रश्न
दी गई श्रृंखला में '?' के स्थान पर क्या आना चाहिए? 4, 9, 25, 49, ?
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उत्तर और व्याख्या देखें
सही उत्तर: (C) 121
श्रृंखला 4, 9, 25, 49 क्रमागत अभाज्य संख्याओं के वर्ग हैं: 2², 3², 5², 7²। अगली अभाज्य संख्या 11 है, इसलिए लुप्त पद 11² = 121 होगा।
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