'The mariner's friend or polyglot indispensable and technical
dictionary of upwards four thousand fivehundred nautical-, Steam-
and shipbuilding-terms ... in ten different languages ...'
'The mariner's friend or polyglot indispensable and technical
dictionary of upwards four thousand fivehundred nautical-, Steam-
and shipbuilding-terms ... in ten different languages ...'
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let L: room is locked k: he selects rite key to open a door
then
p(L' and k) = p(L') +P(K)-P(L AND K) ALSO P(L') = 0.4
(GIVEN)