Answers

2016-03-16T13:12:01+05:30
The probability of guessing the correct answer to certain question is x/3. if the probability of not guessing a correct answer is x/5. 
therefore the value of x is 15/8
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2016-03-16T13:12:52+05:30
X/3+x/5=1.... 3x+5x=15..... 8x=15...... x=15/8...... {P(E)+p(E')=1}
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