What is the 18th term of the sequence defined by ?
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let a= first team
d= common difference
n=18
then using ,An= a+( n -1) d
A18=a+(18-1) d
= a+17d
d= common difference
n=18
then using ,An= a+( n -1) d
A18=a+(18-1) d
= a+17d
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