Question

Aratati ca:
$\frac{1}{3} < \frac{1}{2 \times 3} + \frac{1}{3 \times 4} + \frac{1}{4 \times 5} + .... + \frac{1}{29 \times 30} < \frac{1}{2}$
Va rog urgent!!!!

Answer 1

Am adaugat o rezolvare !
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