Question

Calculati 2 supra 7 din [2 supra 7 din(2 supra 7 din 343)]

Answer 1

Răspuns: 8

$\dfrac{2}{7} \cdot \Big [\dfrac{2}{7} \cdot \Big( \dfrac{2}{7}\cdot343 \Big ) \Big ]=\\\\\\ \dfrac{2}{7} \cdot \Big [\dfrac{2}{7} \cdot ( 2\cdot49 ) \Big ]=\\\\\\ \dfrac{2}{7} \cdot \Big (\dfrac{2}{7} \cdot 98 \Big )=\\\\\\\dfrac{2}{7} \cdot 2 \cdot 14=\\\\\\2\cdot2\cdot2=\\\\\\\boxed{8}$

Answer 2

2/7 * [ 2/7 ( 2/7 * 343 ) ] =
2/7 [ 2/7 * 98 ] =
2/7 * 28 =
2 * 4 = 8.