云上的日子bj, From the 25% we can't guess what would be the highest values or lowest values and hence it would not be rational to think that median is 4. It may be or may not be the median. SO not sufficient. 35% projects - 2 persons or less and 25% projects- 4 or more.Meaning that (35+25)% has the range 2 to 4. And hence the remaining (100-60)% or 40% would have assigned 2 to 4 persons. And the median would be (2+4)/2=3. Hope, it helps.
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