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O problema simpla de matematica la care multa lume greseste! Afla care este raspunsul corect!
Problema de mai sus a fost lansata pe multe retele de socializare. Statisticile spun ca peste 90% dintre respondenti gresesc raspunsul.
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Desi este foarte simpla, problema da batai de cap din cauza nerespectarii ordinii operatiilor matematice. Astfel, se stie ca intr-o expresie matematica in care nu exista nicio paranteza, niciun radical sau exponent, se efectueaza prima data operatiile de gradul doi (inmultirea si impartirea, in ordinea in care acestea apar in expresie), apoi operatiile de gradul unu (adunarea si scaderea, tot in ordinea in care apar).
Astfel in problema 7 + 7 ÷ 7 + 7 × 7 – 7 =
7 ÷ 7 = 1
7 × 7 = 49
Iar expresia matematica devina
7 + 1 + 49 – 7 =
8 + 49 – 7 =
Citeste continuarea pe SFATULPARINTILOR. RO.
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