Which speedcube should I get?

Which of those sequences is a geometric sequence

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.