Jak to policzyć:
1/10 + 1/9 x 3/10 + 1/8 x 2/3 x 3/10 + 1/7 x 1/8 x 2/9 x 3/10
1/10 + 1/9 x 3/10 + 1/8 x 2/3 x 3/10 + 1/7 x 1/8 x 2/9 x 3/10= 1/10+1/30+1/40+1/840=84/840+28/840+21/840+1/840=134/840=67/420
zadanie w załączniku ;)
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1/10 + 1/9 x 3/10 + 1/8 x 2/3 x 3/10 + 1/7 x 1/8 x 2/9 x 3/10= 1/10+1/30+1/40+1/840=84/840+28/840+21/840+1/840=134/840=67/420
zadanie w załączniku ;)