Central Board Of Secondary Education [CBSE] — class 10 maths examination

Set 1 was too difficult as compared to the other two sets. Some questions of section c and d was very difficult-esp. The 4 marks question from a. P and trigonometry. The qstn no. S 18, 20, 25 and 28 were very hard to find. So the valuation should be made more liberal. Why there is such big differences made among the questions of the three sets? According to most of the people, the questions of the last two sections (C and d) should be the same with changes in the question numbers