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The 5th term of the sequence for which \( t_1 = 1,\; t_2 = 2 \) and \( t_{n+2} = t_n + t_{n+1} \) is: যে ধারায় \( t_1 = 1,\; t_2 = 2 \) এবং \( t_{n+2} = t_n + t_{n+1} \) সেই ধারার পঞ্চম-তম পদ কত হবে?

Practice MCQ for SSC, UPSC, RRB Exams

A. 5 A. 5

B. 10 B. 10

C. 6 C. 6

D. 8 D. 8

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

Given:
\( t_1 = 1,\; t_2 = 2 \)
\( t_{n+2} = t_n + t_{n+1} \)

Find terms step by step:

\( t_3 = t_1 + t_2 = 1 + 2 = 3 \)
\( t_4 = t_2 + t_3 = 2 + 3 = 5 \)
\( t_5 = t_3 + t_4 = 3 + 5 = 8 \)

5th term = 8

দেওয়া আছে:
\( t_1 = 1,\; t_2 = 2 \)
\( t_{n+2} = t_n + t_{n+1} \)

ধাপে ধাপে বের করি:

\( t_3 = 1 + 2 = 3 \)
\( t_4 = 2 + 3 = 5 \)
\( t_5 = 3 + 5 = 8 \)

5th term = 8

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The 5th term of the sequence for which \( t_1 = 1,\; t_2 = 2 \) and \( t_{n+2} = t_n + t_{n+1} \) is: যে ধারায় \( t_1 = 1,\; t_2 = 2 \) এবং \( t_{n+2} = t_n + t_{n+1} \) সেই ধারার পঞ্চম-তম পদ কত হবে?

Practice MCQ for SSC, UPSC, RRB Exams

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

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