Toán 6

L

luffy_1998

$S = 1.2.3.5.8.13.21.34.55.89.144$
$= (1.2.3.13.21.34.89.144).8.5.55 = 2200.A$
$A \not\,\vdots 5 \rightarrow A \not\,\vdots\ 10$
$\rightarrow S$ tận cùng bằng 2 chữ số 0
 
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