সমান্তর প্রগতি 2, 7, 12, _____ এর 10ম পদটি কী হবে?

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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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প্রদত্ত:

2, 7, 12, ____________

অনুসৃত ধারণা:

Tn = a + (n - 1)d

যেখানে a = প্রথম পদ, n = পদের সংখ্যা এবং d = পার্থক্য

গণনা:

প্রদত্ত ক্রমে,

a = 2

d = 7 - 2 = 5

T10 = 2 + (10 - 1) 5

T10 = 2 + 45

T10 = 47

দশম পদ = 47

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