In a servey of 25 student ,it was found that 15 had taken mathematics 12 had taken physics and 11 had taken chemistry 5 had taken mathematics and chemistry 9 had taken mathematics and physics 4 had taken physics and chemistry and 3 had taken all the three subject. find the number of student that had ।.।......... 1. only chemistry 2. none of the subject .... any one give me answer....?
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The Answer is 2
Step-by-step explanation:
25=15+12+11 -(5+9+4)+3+none
25=38-18+3+none
25=23+none
therefore none=25-23=2
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