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Sequences and Series question

2023 · 1 Feb · Shift 1 · Q36
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Sequences and Series question

2023 · 1 Feb · Shift 1 · Q36

JEE MainMathematicsSequences and SeriesNumerical+4 / −1
Let a1=8,a2,a3,…,ana_{1}=8, a_{2}, a_{3}, \ldots, a_{n}a1​=8,a2​,a3​,…,an​ be an A.P. If the sum of its first four terms is 50 and the sum of its last four terms is 170 , then the product of its middle two terms is ‾\underline{\hspace{2cm}}​.
Numerical answer
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