Question

The measurements (in mm) of the diameters of the head of the screws are given below
Diameter (in mm)
No. of screws
33-35
9
36 - 38
21
42-44
20
39-41
20
45-47
18
Calculate mean diameter of head of a screw by "Assumed Mean Method"
The marks scored by students in Mathematics in a certain
minations​

Answer 1

Answer:

Friction is a force between two surfaces that are sliding, or trying to slide, across each other

Step-by-step explanation:

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