Home
Class 12
MATHS
Probability that A speaks truth is (4)/(...

Probability that A speaks truth is `(4)/(5)`. A coin is tossed. A reports that a head appears. The probability that actually there was head is

A

`(4)/(5)`

B

`(1)/(2)`

C

`(1)/(5)`

D

`(2)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    NCERT GUJARATI|Exercise EXERCISE 3.4|16 Videos
  • PROBABILITY

    NCERT GUJARATI|Exercise EXERCISE 3.5|15 Videos
  • PROBABILITY

    NCERT GUJARATI|Exercise EXERCISE 3.2|18 Videos
  • MATRICES

    NCERT GUJARATI|Exercise Miscellaneous Exercise on Chapter 3|15 Videos
  • RELATIONS AND FUNCTIONS

    NCERT GUJARATI|Exercise MISCLELLANEOUS EXERCISE ON CHAPTER 1|19 Videos

Similar Questions

Explore conceptually related problems

The probability that A speaks truth is (4)/(5) , while this probability for B is (3)/(4) . The probability that they contradict each other when asked to speak on an event is ……….

A coin is tossed twice, what is the probability that etleast one tail occurs?

A coin is tossed four times. The probability that atleast one heads turns up is

The probability that A speaks trith is (4)/(5) , while this probability of B (3)/(5) . The probability of at least one of them is true when asked to speak on an event is . . . . . . . . . . .

A coin is tossed twice, what is the probability that at least one tail occurs?

Two unbaised coins are tossed. If one coin shows head, the probability that the other also shows head is ……..

A fair coin is tossed n times, then what is the probability that H (Head) has appeared at least once ?

A and B are two independent witnesses (i.e., there is no collision between them) in a case. The probability that A will speak the truth is x and the probability that B will speak the truth is y. A and B agree in a certain statement. Show that the probability that the statement is true is (xy)/(1-x-y+2xy) .

A person is known to speak the truth 4 times out of 5. He throws a die and reports that it is an SIX. The probability that it is actually an six, is

A man is known to speak truth 3 out of 4 times. He throws a die and reports that it is a six. Find the probability that it is actually a six.