Question

cate plusuri se afla in operatia

3+7+3+7+3+7.....+3+7=300

va rog rapid

Answer 1

3 + 7 + 3 + 7 + 3 + 7 +... + 3 + 7 = 300

grupam termenii doi cate doi :

(3+7) + (3+7) + (3+7) +...+ (3+7) = 300

aflam cate grupe avem :
3+7 = 10
300 : 10 = 30

Intre grupele formate(parantezele) avem:
30 - 1 = 29 de plusuri

In paranteze avem:
30 × 1 = 30 de plusuri

Deci, in total avem:
29 + 30 = 59 de plusuri