NCERT Class 11-Math's: Exemplar Chapter –16 Probability Part 10
Glide to success with Doorsteptutor material for ISAT : Get full length tests using official NTA interface: all topics with exact weightage, real exam experience, detailed analytics, comparison and rankings, & questions with full solutions.
Question 23:
(A)
(B)
(C)
(D) None of these
Answer: (A)
Question 24:
If for any two events A and B, then
(A)
(B)
(C)
(D) None of these
Answer: (A)
Question 25:
boys and girls sit in a row at random. The probability that all the girls sit together is
(A)
(B)
(C)
(D) None of these
Answer: (C)
Question 26:
A single letter is selected at random from the word ‘PROBABILITY’. The probability that it is a vowel is
(A)
(B)
(C)
(D)
Answer: (B)
Question 27:
If the probabilities for A to fail in an examination is and that for B is , then the probability that either A or B fails is
(A)
(B)
(C)
(D)
Answer: (C)
Question 28:
The probability that at least one of the events A and B occurs is 0.6. If A and B occur simultaneously with probability , then is
(A)
(B)
(C)
(D)
Answer: (C)
Question 29:
If M and N are any two events, the probability that at least one of them occurs is
(A)
(B)
(C)
(D)
Answer: (B)
State Whether the Statements Are True or False in Each of the Exercises 30 to 36
Question 30:
The probability that a person visiting a zoo will see the giraffe is , the probability that he will see the bears is and the probability that he will see both is .
Answer: False
Question 31:
The probability that a student will pass his examination is , the probability of the student getting a compartment is , and the probability that the student will either pass or get compartment is .
Answer: False
Question 32:
The probabilities that a typist will make or more mistakes in typing a report are, respectively, .
Answer: False