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:
Total no. of people = 120
No. of people having age more than 30 = 90
Probability(people having age more than 30) = 90/120 = 3/4
Remaining no. of people = 120-90 = 30
Probability(people having age less than 20) = 30/120 = 1/4 = 0.25
Ans : 0.25
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