A string of six gears exists, with each gear turning in conjunction with one another. Which gears operate in the same rotation?
Gears 1, 3, and 5
Because gears must work in harmony with one another, gears turn opposite the direction of their partners. For this reason, gears 1, 3, and 5 turn in the same direction, while 2, 4, and 6 turn in the opposite direction.