Question

Given the following information, find the probability that a randomly selected student will be short or very short. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21

Answer 1

Answer: $\dfrac{105}{208}$

Step-by-step explanation:

Given : Number of students who are very short = 45

Number of students who are short= 60

Number of students who are tall = 82

Number of students who are  very tall= 21

Total students = $45+60+82+21=208$

Then the number of students who are short or very short =45+60 =105

Now, the probability that a randomly selected student will be short or very short will be :-

$\dfrac{\text{Number of students are short or very short }}{\text{Total students}}\\\\=\dfrac{105}{208}$

Hence, the probability that a randomly selected student will be short or very short =$\dfrac{105}{208}$

Answer 2

$45 - 60 = 82 - 21$