161cm,1.61cm,0.161cm" and "0.0161cm" all have "

Given the number: 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers are

Given the number: 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers are

The values for the diameter of a wire as measured by a screw gauge were found to be 0.026 cm, 0.028 cm, 0.029 cm, 0.027 cm, 0.024 cm and 0.027 cm. Find the mean value and the relative error.

The values for the diameter of a wire as measured by a screw gauge were found to be 0.026 cm, 0.028 cm, 0.029 cm, 0.027 cm, 0.024 cm and 0.027 cm. Find the mean value and the relative error.

If the heights of 5 persons are 140cm,150cm,152cm,158cm and 161cm respectively,find the mean height.