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అంక శ్రేడి 2, 7, 12, _____ యొక్క 10వ పదం ఏమిటి?

This question was previously asked in
Official Soldier Technical Paper: [IRO Delhi] - 2020
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  1. 245
  2. 243
  3. 297
  4. 47

Answer (Detailed Solution Below)

Option 4 : 47
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Detailed Solution

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ఇచ్చిన దత్తాంశం

2, 7, 12, ____________

ఉపయోగించిన కాన్సెప్ట్

Tn = a + (n - 1)d

ఇక్కడ a = మొదటి పదం, n = నిబంధనల సంఖ్య మరియు d = భేదం

సాధన

ఇచ్చిన సిరీస్‌లో

a = 2

d = 7 - 2 = 5

T10 = 2 + (10 - 1) 5

T10 = 2 + 45

T10 = 47

పదవ పదం = 47

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