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

Step-by-step explanation:

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simple way 120 people = total

90 people =average

30 years it means 90/120

=3/4 …. others 4/4 -3/4

= 1/4

It means means %25 it means 25/100 = 0.25 very clear