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elena55 [62]
3 years ago
7

1/1×3+1/2×4+1/3×5 +...+1/18×20=Please, help me. ❣️​

Mathematics
1 answer:
Sedaia [141]3 years ago
6 0

Answer:3.1944

Step-by-step explanation:

(1÷1×3)+1÷(2×4)+1÷(3×5)+1÷(18×20)

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