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CBSE Class 12-science Answered

<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; A letter is either from TATA NAGAR OR FROM KOLKATA but due to low quality ink used maximum alphabeds were erased and only "TA" isvisible then find the probability was from TATA NAGAR</div>
Asked by Manav | 22 Nov, 2017, 10:52: AM
Expert Answer
begin mathsize 16px style straight E subscript 1 rightwards double arrow probability space of space selecting space Tatanagar
straight E subscript 2 rightwards double arrow probability space of space selecting space Kolkata
straight A rightwards double arrow 2 space consecutive space letters space is space TA
straight P open parentheses straight E subscript 1 over straight A close parentheses equals fraction numerator straight P open parentheses straight E subscript 1 close parentheses straight P open parentheses straight A over straight E subscript 1 close parentheses over denominator straight P open parentheses straight E subscript 1 close parentheses straight P open parentheses straight A over straight E subscript 1 close parentheses plus straight P open parentheses straight A close parentheses straight P open parentheses straight A over straight E subscript 2 close parentheses end fraction
now space
straight P open parentheses straight E subscript 1 close parentheses equals 2 over 8......2 apostrophe TA apostrophe out space of space 8 space combination space of space consequent space letters
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space open curly brackets TA comma AT comma TA comma AN comma NA comma AG comma GA comma AR close curly brackets
straight P open parentheses straight E subscript 2 close parentheses equals 1 over 6.....1 apostrophe TA apostrophe out space of space 6 space combination space of space consequent space letters
straight P open parentheses straight E subscript 1 close parentheses equals straight P open parentheses straight E subscript 2 close parentheses equals 1 half end style
Answered by Arun | 29 Nov, 2017, 11:23: AM
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