SSC CPO practice question
A geometric progression has first term 5 and common ratio 2. Find its 12th term.
From a SSC CPO Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 10240
For a GP, the nth term is given by tn = a × rn−1. Here a = 5, r = 2, n = 12. So t12 = 5 × 211 = 10240.
हिंदी में प्रश्न
एक गुणोत्तर श्रेणी (GP) का पहला पद 5 है और सार्व अनुपात 2 है। इसका 12वाँ पद ज्ञात कीजिए।
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सही उत्तर: (C) 10240
GP में nवें पद का सूत्र है: tn = a × rn−1। यहाँ a = 5, r = 2, n = 12। अतः t12 = 5 × 211 = 10240।
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