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25. The value of the sum in the 50th bracket ofis(1) (2 3 + 4) (5 6+7 8 9) +.1) 652253) 556252) 562554) 242649 |
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Answer» up to 49 brackets, number of numbers covered will be1+2+3+...+49= 49*50/2= 1225 50th bracket will have numbers 1226,1227,.......1275 (50 numbers) sum of these 50 numbers will be (50/2)*(1226+1275)= 26*2501=65225 |
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