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Solution


Q.

In an experiment, a set of reading are obtained as follows – 1.24 mm, 1.25 mm, 1.23 mm, 1.21 mm. The expected least count of the instrument used in recording these readings is ______ mm.   [2026]
1 0.05  
2 0.01  
3 0.001  
4 0.001  

Ans.

(2)