25 questions were on the test.
There are two ways to assess observational error: accuracy and precision. Precision measures how closely spaced or widely separated a set of measurements are from one another, whereas accuracy measures how near or far off a given set of measurements are from their true value.
Given
60% accurate means 40% inaccurate.
10 inaccurate answers means 40% inaccurate
10/40 x 100 = 25
To know more about accuracy refer to :
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