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Paragraph: The sixth term of an AP is 2 and its common difference is greater than 1 . Question: What is the first term of the AP so that the product of the first, fourth and fifth terms is greatest?

Options

  1. A-4
  2. B-6
  3. C-8
  4. D-10

Correct answer

B. -6

Step-by-step solution

Since, a=2-5 x aligned & a =2-5 ( 8 5 ) & a =-6 aligned

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