Question

Which of the following is not an AP? a. -1.2, 0.8, 2.8,... b. 3, 3+√2, 3+2√2, 3+3√2,... c. 4/3, 7/3, 9/3, 12/3,... d. -1⁄5, -2⁄5, -3⁄5, ...

Answer 1

b. 3, 3+√2, 3+2√2, 3+3√2,... is not in AP