EN
The author describes application of three probability interpretations: classic (Bernoulli and Leplace), frequency (empirical) and personalistic (subjective). Author convinces that increasing information resources and possibilities to the computing progress will be conducive to broaden application of frequency interpretation. In relation to the scarce or single occurrences which chances of realisations are more and more frequently formulated in probabilistic categories, role of personalistic interpretation of probability will be increased. The last argument is illustrated by some cases including almost faultless vote's prognosis of 2002 of Gallup Institute in the United States of America