409. The radiotelegraph station transmitted a digital text containing 1100 digits. Due to interference, each digit could be incorrectly received with a probability of 0.01. Considering the Moivre-Laplace theorem to be applicable, find the probability that there will be less than 20 errors in the accepted text.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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