Question

Calculati media aritmetica a numerelor 2 la puterea 17; 2 la puterea 18 si 3*2 la puterea 19 repede

Answer 1

Răspuns:

$(2^{17} + 2 ^{18} + 3 \times 2 ^{19} ) \div 3 = (1 + 2 + 3 \times 2^{2} ) \times 2 ^{17} \div 3 = (1 + 2 + 3 \times 4) \times 2 ^{17} \div 3 = 15 \times 2 ^{17} \div 3 = 15 \div 3 \times 2^{17} = 5 \times 2 ^{17}$

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