- A−3
- B−6
- C6
- D3
Step-by-Step Solution
The new terms are 13, 10, 7: a decreasing AP with common difference −3. In general if a, b, c are in AP then b + c, c + a, a + b are in AP with difference −d.
Answer: A) −3
2, 5, 8 are in AP. What is the common difference of (5 + 8), (8 + 2), (2 + 5)?
Class 10Properties and Selection of AP TermsAlgebra — Sequences
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