Question

There are 28-right handed students in a class of 31. What is the probability that a student chosen at a random time will be left handed?

Answer 1

There are 28 right handed students out of 31 total. So there are 31 - 28 = 3 left handed students. 

The probability of choosing a left handed student is 3/31.

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Answer 2

Answer: $\dfrac{3}{31}$

Step-by-step explanation:

Given: The number of right handed students = 28

The total number of students = 31

The number of left handed students = $31-28=3$

Now, the probability that a student chosen at a random time will be left handed is given by :-

$\text{P(Left)}=\dfrac{\text{Number of left handed students}}{\text{Total number of students}}\\\\\Rightarrow\text{P(Left)}=\dfrac{3}{31}$

Hence, the probability that a student chosen at a random time will be left handed is $\dfrac{3}{31}$