In a group of 120 people, 90 have an age of more 30 years, and the others have an age of less than 20 years. If a person is selected at random from this group, what is the probability the person's age is less than 20?
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Answer:
1/4
Step-by-step explanation:
Total people = 120
People having age >30 = 90
People having age <20 = 30
Thus, probality = 30/120
= 1/4
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