Find the 10th term from the end of A.P -15,-13,-11.......33
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Hiii..
Just reverse the series and find 10 th term from first.....
Just reverse the series and find 10 th term from first.....
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For making it easier to solve ,we will reverse the AP -15,-13,-11.......33
Thus the AP will become 33,31.......-11,-13,-15
Here a = 33
an = -15
d = 33-31 = 2
We have to find 10th term
we know that an = a+(n-1)d
We will use this here
n = 10
=> a(10) = 33+(10-1)×-2
=> a(10) = 33-18 = 15
Hence The 10th term from the last is 15
Thus the AP will become 33,31.......-11,-13,-15
Here a = 33
an = -15
d = 33-31 = 2
We have to find 10th term
we know that an = a+(n-1)d
We will use this here
n = 10
=> a(10) = 33+(10-1)×-2
=> a(10) = 33-18 = 15
Hence The 10th term from the last is 15
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