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question_answer1)
What is the probability of getting a sum 9 from two throws of a dice?
A)
\[\frac{1}{6}\] done
clear
B)
\[\frac{1}{8}\] done
clear
C)
\[\frac{1}{9}\] done
clear
D)
\[\frac{1}{12}\] done
clear
E)
None of these done
clear
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question_answer2)
Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
A)
\[\frac{1}{2}\] done
clear
B)
\[\frac{3}{4}\] done
clear
C)
\[\frac{3}{8}\] done
clear
D)
\[\frac{5}{16}\] done
clear
E)
None of these done
clear
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question_answer3)
A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:
A)
\[\frac{1}{22}\] done
clear
B)
\[\frac{3}{22}\] done
clear
C)
\[\frac{2}{91}\] done
clear
D)
\[\frac{2}{77}\] done
clear
E)
None of these done
clear
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question_answer4)
A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?
A)
\[\frac{10}{21}\] done
clear
B)
\[\frac{11}{21}\] done
clear
C)
\[\frac{2}{7}\] done
clear
D)
\[\frac{5}{7}\] done
clear
E)
None of these done
clear
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question_answer5)
In a box, there are 8 red, 7 blue and 6 green bails. One ball is picked up randomly. What is the probability that it is neither red nor green?
A)
\[\frac{2}{3}\] done
clear
B)
\[\frac{3}{4}\] done
clear
C)
\[\frac{7}{19}\] done
clear
D)
\[\frac{8}{21}\] done
clear
E)
None of these done
clear
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question_answer6)
In a class, 30% of the students offered English. 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he has offered English or Hindi?
A)
\[\frac{2}{5}\] done
clear
B)
\[\frac{3}{4}\] done
clear
C)
\[\frac{3}{5}\] done
clear
D)
\[\frac{3}{10}\] done
clear
E)
None of these done
clear
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question_answer7)
A man and his wife appear in an interview for two vacancies in the same post. The probability of husband's selection is (1/7) and the probability of wife's selection is (1/5). What is the probability that only one of them is selected?
A)
\[\frac{4}{5}\] done
clear
B)
\[\frac{2}{7}\] done
clear
C)
\[\frac{8}{15}\] done
clear
D)
\[\frac{4}{7}\] done
clear
E)
None of these done
clear
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question_answer8)
Direction: If A and B be two mutually exclusive events in a sample space such that.\[P(A)=\frac{2}{5}and\,\,P(B)=\frac{1}{2},\,\,then.\] Find P\[\mathbf{(A}\,\,\cup \,\,\mathbf{B)}\]:
A)
\[\frac{7}{16}\] done
clear
B)
\[\frac{9}{16}\] done
clear
C)
\[\frac{9}{10}\] done
clear
D)
\[\frac{1}{2}\] done
clear
E)
None of these done
clear
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question_answer9)
Direction: If A and B be two mutually exclusive events in a sample space such that.\[P(A)=\frac{2}{5}and\,\,P(B)=\frac{1}{2},\,\,then.\] Find P \[(\overline{\mathbf{A}}\cap \overline{\mathbf{B}})\]:
A)
\[\frac{4}{5}\] done
clear
B)
\[\frac{1}{10}\] done
clear
C)
\[\frac{8}{9}\] done
clear
D)
\[\frac{13}{20}\] done
clear
E)
None of these done
clear
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question_answer10)
Direction: If A and B be two mutually exclusive events in a sample space such that.\[P(A)=\frac{2}{5}and\,\,P(B)=\frac{1}{2},\,\,then.\] Find P\[(\overline{\mathbf{A}}\cap \mathbf{B})\]:
A)
\[\frac{1}{2}\] done
clear
B)
\[\frac{3}{5}\] done
clear
C)
\[\frac{4}{7}\] done
clear
D)
\[\frac{7}{15}\] done
clear
E)
None of these done
clear
View Solution play_arrow
