which term of the A. P. 3,15,27,39...will be 120 more than its 21st term
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First term, a = 3
Common difference, d = 15-3 = 12
Let the required number be nth term
Then,
Therefore, 31st term is 120 more than 21st term
Common difference, d = 15-3 = 12
Let the required number be nth term
Then,
Therefore, 31st term is 120 more than 21st term
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5
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