Question

18)FIND THE MEAN OF FIRST TEN ODD NUMBERS
10
13
15​

Answer 1

Answer:

• $\boxed{\pink{\sf{Mean = 10}}}$

Step-by-step explanation:

Question:

• Find the mean of first ten odd numbers.

Odd number:

• A number which is not divisible by 2 is known as odd number

The first ten odd numbers are:

• 1,3,5,7,9,11,13,15,17,19

From the given data:

• Number of terms = 10

Sum of the terms = Sum of the first 10 odd numbers:

• 1+3+5+7+9+11+13+15+17+19 = 100

Formula to find mean:

• $\sf{Mean = \dfrac{Sum\: of \:the\: terms}{Number \:of\: terms}}$

Solution:

• $\pink{\sf{Mean = \dfrac{100}{10}}}$

• $\boxed{\pink{\sf{Mean = 10}}}$

Answer 2

Given

• First ten odd numbers

To find

• Their mean

Solution

↣ First ten odd numbers :-

• 1,3,5,7,9,11,13,15,17,19.

↣ Mean = Sum of all observations / Total number of observations

• Mean = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 / 10
• Mean = 100 / 10
• Mean = 10

Hence, the mean of first ten odd numbers is 10.