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in Sequences and Series by (15.4k points)

The third term of a GP is 4. Find the product of the first five terms.

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1 Answer

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Given; t3 = 4 ⇒ ar2 – 4

The product of the first five terms

= a × ar × ar2 × ar3 × ar4

= a5r10 = (ar2)5 

= 45 

= 1024.

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