If for an A.P S₃₁=2604 find the 16th term.
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but in this question the value of a and d is not provided !
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Given:-
= 2604
To find:-
- 16th term.
Formula:-
here,
= sum of the terms
- a = 1st term
- n = no. of terms
- d = common difference
Solution:-
2604 =
× 2a+30d
= 2a+30d
168 = 2a+30d
84 = a+15d
Now,
= a+15d
hence, the value of 16th term is 84
Additional information:-
to find the value of a term i.e , following formula is used:-
here,
= nth term
- a = 1st term
- n = no. of term
- d = common difference
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