Q1 of 11 Page 225

Find different sets of 6 different numbers between 10 and 30 with each number given below as mean:

15

Given: 6 numbers and their average is 15 between 10 and 30.

As the given average is 15 and numbers = 6


Hence, the sum of numbers must be = 15 × 6 = 90


So, Set having different numbers between 10 and 30 = {11, 12, 13, 14, 15, 25}


Average =(11+12+13+14+15+25)/6


= 90/6


= 15


Which is true as per given condition.


Hence, the required set is {11, 12, 13, 14, 15, 25}.


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5

The details of rubber sheets a farmer got during a month are given below.


i) How many kilograms of rubber did he get a day on average in this month?


ii) The price of rubber is 120 rupees per kilogram. What is his average income per day this month from selling rubber?

 1

Find different sets of 6 different numbers between 10 and 30 with each number given below as mean:

20

 1

Find different sets of 6 different numbers between 10 and 30 with each number given below as mean:

25

 2

The table below shows the children in a class, sorted according to their heights.


What is the mean height of a child in this class?