Question

TO FIND THE ODD ONE OUT AND GIVE REASON. 1) pitch scale,head scale, millimeter, one astronomical unit 2)ratchet hollow cylinder, metre scale, screw 3)kilometre, light year, astronomical unit, millimeter

Answer 1

Answers :
1. One astronomical unit.
Reason : because this unit is used to measure distance in universe.
2. Screw.
Reason : because the rest are just unique.
3. Millimeter
Reason : because it's the smallest unit used to measure distance.
Hope it's helpful...