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13. Let al, a2, a3, ....., a49 be in A. ...

13. Let al, a2, a3, ....., a49 be in A. P. such that a4k+1 = 416 and ag +243 = 66. If k=0 aſ +až +...... +aſı = 140m , then m is equal to : (1)66 (2) 68 (3) 34 (JEE-MAIN-2018] (4)33

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