NDA 2019 Mathematics question
If 3rd, 8th and 13th terms of a GP are p, q and r respectively, then which one of the following is correct?
Answer: (A)
Solution
, , . Then . (Terms whose positions are in AP are themselves in GP.)
If 3rd, 8th and 13th terms of a GP are p, q and r respectively, then which one of the following is correct?
, , . Then . (Terms whose positions are in AP are themselves in GP.)