in a class tenth there are 45girls and 30boys the names of all girls and boys are written on a different cards and placed in a box these cards are mixed up thoroughly and a card is drawn random what is the probability of getting name card eighter boy or girl?
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Probability=possible outcomes/total outcomes
Total outcomes=total number for students in the class
=> 45 girls+ 30 boys= 75 students
therefore, probability of getting a name card either boy or girl is:
1/75
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