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Mathematics, 21.11.2020 01:00 edgytaehyung
1. find the number of elements and subsets in the following set {{a, b,c, d}} 2. Solve (1*2)+(2*3)+(3*4)+...+(n*(n+1)) if n=300
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1. find the number of elements and subsets in the following set {{a, b,c, d}}
2. Solve (1*2)+(2*3)+...
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