Question

In a college hostel there are 75 students out of which 15 students like to drink tea , 40 like to drink coffee and 20 like neither. Two students from the hostel came to canteen . Find probability that both will ask same drink.

Answer 1

since both students can drink tea or else coffee or one tea and another coffee or one coffee and another tea ....
.•. probability of asking same drink = 2/4 = 1/2

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