They are a method for showing the frequency of a data plot in a much more compact and numerical way.
1[2 3
2[1 7
3[3 4 5 7
4[ 0 0 1
Key 1[2= 12
meaning that 3[5 is 35 and 4[0 is 40 and so and so forth
Here is the answer to your problem:
<h3><u>https://brainly.in/question/10886862</u></h3>
There are 33 numbers between 1 and 100 divisible by 3, therefore the probability is 33% or 1/3
If n = 5, then 9n = 45
45 - 15 = 30, which is the same thing as 6n