Question

Quéstion :

⇒ In a group of 120 people 90 have an age of more 30yrs and the other have age of less then 20 yr.if a person is selected at random from htis group .what is the probability the person's age is less than 20.



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Answer 1

Answer:

there are 30 persons having age less than 20

and total are 120

so probability=30/120=1/4