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sa se calculeze [1/3]+[2/3]+.............+[100/3]
[..] parte fract.


Răspuns :


[tex] \frac{1}{3} \times (1 + 2 + 3 + ... + 100) = \frac{1}{3} \times \frac{100(100 + 1)}{2} = \frac{100 \times 101}{6} = \frac{10100}{6} = 1683.33[/tex]