Find the eleventh term from the last term of the AP: 27, 23, 19, ..., –65.
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Answered by
23
Hiii...
Here is answer....
Reverse the series and find from first ... the 11 th term....
Here is answer....
Reverse the series and find from first ... the 11 th term....
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Answered by
23
Heya !!
Reverse the AP to simplify it .
Thus the new AP will be
-65,-61,............19,23,3 27
Now here
a = -65
an = 27
d = -61-(-65) => 4
Now,
We know an = a+(n-1)d
Here ATQ we have to find 11th term therefore
n = 11
so, a11 = -65+(11-1)4
=> -65+40
=> -25
hence 11th last term will be -25
Reverse the AP to simplify it .
Thus the new AP will be
-65,-61,............19,23,3 27
Now here
a = -65
an = 27
d = -61-(-65) => 4
Now,
We know an = a+(n-1)d
Here ATQ we have to find 11th term therefore
n = 11
so, a11 = -65+(11-1)4
=> -65+40
=> -25
hence 11th last term will be -25
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