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In a class, there are 18 girls and 16 bo...

In a class, there are 18 girls and 16 boys. The class teacher wants to choose one for class monitor. What she does she writes the name of each on a card and puts them into a basket and mixes throoughly? A child is asked to pick up on card from the basket. What is the probability that the name written on the card is (i) the name of a girl? (ii) the name of a boy? (iii) the name of topper student of the class? (iv) not ''Shiv Kumar'' who is the son of Principal of this school?

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