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cit fac ] 7^{7} * 7^{7} * 7^{7} } * 7^{7} * 7^{7} * 7^{7} * 7^{7} in paranteza sunt puterea

Răspuns :

fac 7^(7+7+7+7+7+7+7)=7^(7*7)=7^49
as simple as that!!!!