Let a, b, c be in AP and k ≠ 0 be a real number. Which of the following are correct?

1. ka, kb, kc are in AP

2. k – a, k – b, k – c are in AP

3. a/k, b/k, c/k are in AP

Select the correct answer using the code given below :

Mathematics 2019 NDA Mathematics 2019 NDA 2019

Options