fibd the 8th term from the end of the AP 7,10,13,.........,184
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Step-by-step explanation:
Here !!
first term is 7 say "a"
and last term is 184 say "an"
if the no. of terms are n
D ( common difference) = 13-10 = 10-7 => 3
Now we have to find the 8th last term so it will be easier for us if we will reverse the AP
=> 184,181, ..........13,1 0,7
now D = -3 and a = 184
an = 7
Now we have to find 8th term :-
use an = a+(n-1)d
just plug in the values....
a8 = 184 + (8-1)×-3
a8 = 184 -21
a8 = 163
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