The diameter of an average size penny was found to be 1.95 cm. Which digit in the diameter of the penny represents the estimated digit?

A 1

B 9

C 5

Answer: - C) 5

Explanations: - The ending digit of a number is always estimated digit as the actual value might be slightly lower or greater than the estimated value. So, in measurements we record the results with one estimated digit that is uncertain digit.