 Hello and how are you all doing today? The question says this is an activity. Ask all the students in your class to write a three digit number. Choose any student from the room at random. What is the probability that the number written by him or her is divisible by three and do you remember the divisibility test? It is a number is divisible by three if the sum of its digits is divisible by three. Right? So how many students are there in your class? Let's say 20 students. So 20 students. So let's say the digits which are written by them is 127, 150, 182 and 199. Right? Now the frequency of this is given to us as let's say 573 and again five. So if we have chosen any student from the room at random, let's say we have chosen a student from the class which is writing down number 150. So we need to find out the probability that the student writes a number that is divisible by three. Now there are seven chances out of 20 that a number is selected by a student which is divisible by three because if you add all these numbers that is one plus five plus zero it is coming out to be six and six is exactly divisible by three. So the probability that the student writes the number that is divisible by three is seven out of the 20 students. Right? So this will be the required probability if the activity given to us corresponds to this table. Hope you enjoy and have a good day.