The maximum number of significant figure of the thermometer is 3.
What is significant figure?
Significant figures are used to establish the number which is presented in the form of digits.
A significant figure is a figure or a digit that contributes to how accurately something can be measured.
For the given thermometer, the reading of the digits is in 2 significant figure and the calibration is in one digit.
combining the 2 digits of reading and 1 digit calibration gives 3 significant figures.
Thus, the maximum number of significant figure of the thermometer is 3.
Learn more about significant figures here: https://brainly.com/question/24491627
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