Which term of an A.P 21,42,63,..............is 210
Answers
Answered by
16
Answer:
10th term
Step-by-step explanation:
an= a+ (n-1) *d
210= 21+(n-1)*21
210=21+21n-21
210=21n
n=10
Answered by
4
Answer:
Answer:
10th term
Step-by-step explanation:
an= a+ (n-1) *d
210= 21+(n-1)*21
210=21+21n-21
210=21n
n=10
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