13 + 23 + 33 + ... n3=...
А) (1 +2+3+... n)3 B) (1+2+3+... n)2
C)(1 + 2 + 3 + ...п)* D) (1+23... n) 5
ОА
Ов
Ос
OD
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Answer:
option b is the right answer
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