AVERAGE _ LESSON - 1 # INTRODUCTION

so friends in this lesson number one we are going to learn introduction on the topic called average so friends everyone those are preparing for a competitive exams I think you know that how to find an average right so average is equal to sum of observation divided by total number of observation for example if

they ask what is average of this number right so 10 60 46 and 20 if we need to find an average of the number initially we need to add all the numbers right so 10 + 60 + 40 6 + 20 divided by total number of observation that is four so the resultant answer will be the average

of this number so friends for some cases without using a formula or without adding by seeing a number itself we can directly say average of the number but the number should fall any one of this category right so friends for example let me take what is consecutive numbers I think everyone knows what is a

consecutive numbers right if it is a consecutive number successive numbers 91 92 93 94 95 it is a consecutive numbers right for example 991 992 993 994 it is also a consecutive numbers so the successive numbers which we used to call it as a consecutive numbers listen here friends the consecutive numbers formula

are x x + 1 x + 2 x + 3 and x + 4 and so on for example just substitute any value of expon I'm just going to substitute X is equal to 90 if I assume that X is equal to 90 then it will be 90 90 + 1 will be 91 92 93 and 94 so friends the

resultant answer will be a consecutive numbers if it is a consecutive number then the center number will be its average right for example the numbers are 90 91 92 93 and 94 if they ask what is the average of this number then we can definitely say that there are five numbers right so totally there are five