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10th term
should be
the answer
should be
the answer
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an =a+(n-1)d
210=21+(n-1)21
210-21=(n-1)21
189=(n-1)21
189÷21=n-1
9=n-1
n=10
I hope it help u
210=21+(n-1)21
210-21=(n-1)21
189=(n-1)21
189÷21=n-1
9=n-1
n=10
I hope it help u
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