The calculation formula of the difficulty coefficient is L= 1-X/W, where l is the difficulty coefficient, x is the average score of the sample, and w is the total score of the test paper. According to the public information about the query, the calculation formula of the difficulty coefficient is L= 1-X/W, where l is the difficulty coefficient, x is the average score of the sample, and w is the total score of the test paper 100 or 150.