Question

Find the average of first 10 even number . like 2, 4,6,8,10,12,14,16,18 and 20. only
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Answer 1

$\underline{\underline{\frak{Required \: \: Answer \: :}}}$

$\dag \: \bold{Average \: = \dfrac{Sum \: \: of \:\: Observations}{Number \: \: of \: \: Observations}}$

The first 10 even numbers are 2 , 4 , 6 , 8 , 10 , 12 , 14 , 16 , 18 and 20.

☯︎ Sum of Observations = 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20

➪ Sum of Observations = 110

☯︎ Number of Observations = 10

$\dag \: \bold{Average \: = \dfrac{Sum \: \: of \:\: Observations}{Number \: \: of \: \: Observations}}$

$\implies \sf Average = \dfrac {110}{10}$

$\implies \sf Average = 11$

∴ The average of first 10 even number like 2, 4,6,8,10,12,14,16,18 and 20 only is $\boxed{\bold{ \underline{11}}}$.

Answer 2

Answer:

RequiredAnswer:

\begin{gathered}\\\end{gathered}

\dag \: \bold{Average \: = \dfrac{Sum \: \: of \:\: Observations}{Number \: \: of \: \: Observations}}†Average=

NumberofObservations

SumofObservations

\begin{gathered}\\\end{gathered}

The first 10 even numbers are 2 , 4 , 6 , 8 , 10 , 12 , 14 , 16 , 18 and 20.

\begin{gathered}\\\end{gathered}

☯︎ Sum of Observations = 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20

➪ Sum of Observations = 110

\begin{gathered}\\\end{gathered}

☯︎ Number of Observations = 10

\begin{gathered}\\\end{gathered}

\dag \: \bold{Average \: = \dfrac{Sum \: \: of \:\: Observations}{Number \: \: of \: \: Observations}}†Average=

NumberofObservations

SumofObservations

\implies \sf Average = \dfrac {110}{10}⟹Average=

10

110

\implies \sf Average = 11⟹Average=11

\begin{gathered}\\\end{gathered}

∴ The average of first 10 even number like 2, 4,6,8,10,12,14,16,18 and 20 only is \boxed{\bold{ \underline{11}}}

11

.