27% of the papers with the highest scores = lowest score = 10. When H=8, L=3, for item No. 10. What is the index of difficulty for item No. 10...? Mcqs

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27% of the papers with the highest scores = lowest score = 10. When H=8, L=3, for item No. 10. What is the index of difficulty for item No. 10...?

(A) 0.125
(B) 1.411

(C) 0.225
(D) 0.625

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