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If Sn and Tn represent the sum of n terms and the nth term respectively, of the series 1+4+10+20+35+⋯, then the value of 19T20S19 is |
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Answer» If Sn and Tn represent the sum of n terms and the nth term respectively, of the series 1+4+10+20+35+⋯, then the value of 19T20S19 is |
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