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Algebraic Expressions as Pattern

Number of ter...

Question

Number of terms of the AP. 21, 18, 15, that must be added to get the sum equal to zero is (1) 12 (3) 14 (2) 13 (4) 15

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Q. How many terms of the AP 21, 18, 15,.......... must be added to get the sum 0?

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