The faster term of an ap is -7 and the common difference is 5 find the 18th term and the general term
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a= -7
d= 5
n=18
so the 18th term is
= a+(n-1)d
= -7+(18-1)5
= -7+(17×5)
= -7+85
= 78
so its 18th term is 78
in general term,
n=n
so nth term of a.p. is,
= a+(n-1)d
= -7+(n-1)5
= -7+5n-5
= 5n-12
so its general term is 5n-12
d= 5
n=18
so the 18th term is
= a+(n-1)d
= -7+(18-1)5
= -7+(17×5)
= -7+85
= 78
so its 18th term is 78
in general term,
n=n
so nth term of a.p. is,
= a+(n-1)d
= -7+(n-1)5
= -7+5n-5
= 5n-12
so its general term is 5n-12
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