6th term from the end of the A.P. 17, 14, 11.................. is -25, find the last
term of the A.P.
please
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Answer:
given: an=-25 ,d=-3, a1=17
we know that, an=a1+(n-1)×d
-25=17+(n-1)×-3
-25=17-3n+3
-3n=-45
n=15
therefore the last term will be on 21 position
an=17+(21-1)×-3
an=17-60
an=-43
ans. last term will be -43
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