Home
Class 12
MATHS
A point is selected at random from the i...

A point is selected at random from the interior of a circle. The probability that the point is closer to the centre than the boundary of the circle is

A

`(1)/(4)`

B

`(1)/(6)`

C

`(3)/(4)`

D

It cannot be determined

Text Solution

Verified by Experts

The correct Answer is:
A

If r is the radius of circle , `A = pir^(2)`

Probability `= (pi((r)/(2))^(2))/(pir^(2)) = (pir^(2))/(4) xx (1)/(pir^(2)) = (1)/(4)`
Promotional Banner

Topper's Solved these Questions

  • POLYNOMIAL,QUADRATIC EQUATION & INEQUALITIES

    NDA PREVIOUS YEARS|Exercise Math|170 Videos
  • PROPERTIES OF TRIANGLE, INVERSE TRIGONOMETRIC FUNCTION

    NDA PREVIOUS YEARS|Exercise MCQ|103 Videos

Similar Questions

Explore conceptually related problems

A point is selected at random from inside a circle. The probability that the point is closer to the circumference of the circle than to its centre, is

Name the points(s) On the boundary of the circle

There are some experiment in which the outcomes cannot be identified discretely. For example, an ellipse of eccentricity 2sqrt(2)//3 is inscribed in a circle and a point within the circle is chosen at random. Now, we want to find the probability that this point lies outside the ellipse. Then, the point must lie in the shaded region shown in Figure. Let the radius of the circle be a and length of minor axis of the ellipse be 2b. Given that 1 - (b^(2))/(a^(2)) = (8)/(9) or (b^(2))/(a^(2)) = (1)/(9) Then, the area of circle serves as sample space and area of the shaded region represents the area for favorable cases. Then, required probability is p= ("Area of shaded region")/("Area of circle") =(pia^(2) - piab)/(pia^(2)) = 1 - (b)/(a) = 1 - (1)/(3) = (2)/(3) Now, answer the following questions. A point is selected at random inside a circle. The probability that the point is closer to the center of the circle than to its circumference is

A point is chosen at random inside a circle. Find the probability that the point is closer to the centre of the circle than to its circumference.

In the Fig.13.12,JKLM is a square with sides of length 6 units.Points A and B are the mid-points of sides KL and LM respectively. If a point is selected at random from the interior of the square.What is the probability that the point will be chosen from the interior of JAB?( FIGURE )

There is a point inside a circle. What is the probability that this point is close to the circumference than to the centre ?

Three points P,Q and R are selected at random from the cirumference of a circle.Find the probability p that the point lie on a semi- circle

NDA PREVIOUS YEARS-PROBABILITY AND PROBABILIYT DISTRIBUTION-Multiple Choice Question
  1. 8 coins are tossed simultaneously. The probability of getting at least...

    Text Solution

    |

  2. Three groups of children contain 3 girls and 1 boy; 2 girls and 2 boys...

    Text Solution

    |

  3. If the probability of simultaneous occurrence of two events A and B is...

    Text Solution

    |

  4. Two integers xa n dy are chosen with replacement out of the set {0,...

    Text Solution

    |

  5. From a deck of cards, cards are taken out with replacement. What is th...

    Text Solution

    |

  6. If A and B are two events such that P(A) = 0.5, P(B) =0.6 and P (A nnB...

    Text Solution

    |

  7. A problem is given to three students A, B and C whose probabilities of...

    Text Solution

    |

  8. A pair of fair dice is rolled. What is the probability that the second...

    Text Solution

    |

  9. A fair coin is tossed and an unbiased dice is rolled together. What is...

    Text Solution

    |

  10. If A, B, C are three events, then what is the probability that at leas...

    Text Solution

    |

  11. If two variables X and Y are independent, then what is thecorrelation ...

    Text Solution

    |

  12. Two independent events A and B are such that P (A uu B) = (2)/(3) an...

    Text Solution

    |

  13. If two fair dice are rolled then what is the conditional probability t...

    Text Solution

    |

  14. Two symmetric dice flipped with each dice having two side painted red,...

    Text Solution

    |

  15. There are n socks in a drawer, of which 3 socks are red. If 2 of the s...

    Text Solution

    |

  16. Five cards are drawn at random from a well shuffled pack of 52 playing...

    Text Solution

    |

  17. In eight throws of a die 5 or 6 is considered a success, find the mean...

    Text Solution

    |

  18. A and B are two events such that bar(A) and bar(B) are mutually exclus...

    Text Solution

    |

  19. A point is selected at random from the interior of a circle. The proba...

    Text Solution

    |

  20. If A and B are two eveuts, then what is the probability of occurrence ...

    Text Solution

    |