Question

O valor da expressão é 1,666.... x 2,333...
(A) 3
(B) 35/9
(C) 4
(D) 52/9

Answer 1

.
$1,666...\times2,333...= \\ \\ (1+ \frac{6}{9} )\times(2+ \frac{3}{9} )= \\ \\ ( \frac{9+6}{9} )\times( \frac{18+3}{9} )= \\ \\ \frac{\not15^5}{\not9^3} \times \frac{\not21^7}{\not9^3} = \\ \\ \frac{35}{9} ~~~Letra~~B$