find the fourth term from the end in an A. p. -11, -8, -5,... 49
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Answer:
a = -11 d = -8-(-11) = 3
4th term from last :-
l- (n-1) d
= 49 - (4-1) 3
= 49 - 3×3
= 49 - 9
= 40
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