Question

There are 5 division between 20 and 40 gwt mark on a spring balance. Find its least count

Answer 1

$\bold{\text{Least count}=\frac{\text{range }}{\text{number of divisions}}}$
Here , given
Number of divisions = 5
Range = gap between the given weight = 40 - 20 = 20

So, Least count = 20/5 = 4