find the mean of the 1/2 3
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Answered by
4
Answer:
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Step-by-step explanation:
We have the sequence, 1,2,3.......n
⇒ This is an AP, with the initial term a=1 and the common difference d=1.
∴ The sum of n terms of an AP is given by,
⇒ S
n
=
2
n
[2a+(n−1)d]
⇒ S
n
=
2
n
[2×1+(n−1)×1]
⇒ S
n
=
2
n
[2+(n−1)]
⇒ S
n
=
2
n
[n+1]
→ Arithmetic mean of n numbers a
1
,a
2
,a
3
,a
4
,...a
n
is given by the formula
⇒ Arithmeticmean=
n
a
1
+a
2
+a
3
+a
4
+...+a
n
⇒ Arithmeticmean=
n
S
n
⇒ Arithmeticmean=
n
2
n
[n+1]
∴ Arithmeticmean=
2
n+1
Answered by
5
Answer:
7/4
Step-by-step explanation:
Mean-->Sum of given terms/No of terms
Mean of 1/2 and 3 is below:
(1/2+3)/2
-->7/4
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