CAT 2017 Slot 1 QA Q31 Progressions & Series

Question 31 of the Quantitative Ability (QA) section, CAT 2017 Slot 1, with CAT's official answer.

If the square of the 7th term of an arithmetic progression with positive common difference equals the product of the 3rd and 17th terms, then the ratio of the first term to the common difference is:
  1. A
    2 : 3
  2. B
    3 : 2
  3. C
    3 : 4
  4. D
    4 : 3

Answer: (A) 2 : 3 Progressions & Series MCQ

A worked solution for this question is being written. Meanwhile, practise it in a timed mock and see how other aspirants did.

Same concept in other years

See every question on AP problems: write terms as a + (n − 1)d and solve.

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