To find out how many candidates passed chemistry, we need to find the number of candidates who passed only chemistry and those who passed both chemistry and physics.
We are given that:
- 31 candidates passed chemistry
- 3 candidates failed both subjects
Therefore, the number of candidates who passed chemistry only can be found by subtracting the number of candidates who passed both subjects (3) from the total number of candidates who passed chemistry (31).
Candidates who passed chemistry only = 31 - 3 = 28
Hence, 28 candidates passed chemistry.
in a Venn diagram represents this: in an exam ,31 candidate passed chemistry,29 passed physics and 3 failed both subject.if 50 candidate sat for the exam, how many of them passed chemistry
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