Р(NKP) = NK+KP+PN
NK = 2/5 (м),
KP = 2/5 + 2/25 = 10/25+2/25=12/25 (м),
PN = P(NKP) - KP - NK
PN = 49/50 - 2/5 - 12/25 = 49/50 - 20/50 - 24-50 = 5/50= 1/10 (м)
Ответ: В) 1/10
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Р(NKP) = NK+KP+PN
NK = 2/5 (м),
KP = 2/5 + 2/25 = 10/25+2/25=12/25 (м),
PN = P(NKP) - KP - NK
PN = 49/50 - 2/5 - 12/25 = 49/50 - 20/50 - 24-50 = 5/50= 1/10 (м)
Ответ: В) 1/10