Home
Class 12
MATHS
The odds against A solving a certain pro...

The odds against A solving a certain problem are 4 to 3 and the odds in favour of B solving the same problem are 7 to 5. Find the probability that the problem will be solved.

Text Solution

Verified by Experts

The correct Answer is:
`16/21`
Promotional Banner

Topper's Solved these Questions

  • VERY SIMILAR TEST 10

    ARIHANT PRAKASHAN|Exercise SECTION C (30 MARKS)|25 Videos

  • VERY SIMILAR TEST 10

    ARIHANT PRAKASHAN|Exercise SECTION C (30 MARKS)|25 Videos

  • VERY SIMILAR TEST 1

    ARIHANT PRAKASHAN|Exercise Section C |10 Videos

  • VERY SIMILAR TEST 2

    ARIHANT PRAKASHAN|Exercise SECTION -C |13 Videos

Similar Questions

Explore conceptually related problems

The probability of A , B and C solving a problem are (1)/(3) , (2)/(7) and (3)/(8) respectively. If all try and solve the problem simulimeously find the probability that only one of them will solve it.

Probability of solving specific problem independently by A and B are 1/2 and 1/3, respectively. If both try to solve the problem independently then find the probability that the problem is solved.

Best method to solve population problem in India is to :

Probability of solving specific problem independently by A and B are 1/2 and 1/3, respectively. If both try to solve the problem independently then find the probability that exactly one of them solves the problem.

A bag contains 5 white and 3 black balls, a second bag contains 4 white and 5 black balls, a third bag contains 3 white and 6 black balls. A bag is selected at rendom and a ball is drawn. Find the probability that the ball is black. Do the problem assuming that the probability of choosing each bag is same.

A lot contains 15 items of which 5 are defective. If three items are drawn at random, find the probability that none of the three is defective. Do this problem directly.

A transgenic food crop which may help in solving the problem of night blindness in developing countries is:

ARIHANT PRAKASHAN-VERY SIMILAR TEST 10-SECTION B (60 MARKS)
  1. Answer any three questions (c) If [{:(2,-1),(1,0),(-3,4):}]A = [{:(-...

    Text Solution

    |

  2. If A = [{:(2,5),(2,1):}] and B = [{:(4,-3),(2,5):}], verify that |AB| ...

    Text Solution

    |

  3. The odds against A solving a certain problem are 4 to 3 and the odds i...

    Text Solution

    |

  4. Find the equations of all the lines of slope 2 and that are tangent to...

    Text Solution

    |

  5. Prove that the function f(x) = tan x -4x is strictly decreasing on (- ...

    Text Solution

    |

  6. If y= cos^(-1) { 2x sqrt(1-x^(2) ) } , find (dy)/(dx).

    Text Solution

    |

  7. If y = ( sin y )^(x), find (dy)/(dx).

    Text Solution

    |

  8. Verify Rolle.s theorem for f(x) = (sin x)/( e^(x)) on 0 le x le pi.

    Text Solution

    |

  9. Show that the function y=(A+Bx)e^(3x) is a solution of the equation (d...

    Text Solution

    |

  10. Solve (x+1) (dy)/(dx) = 2xy.

    Text Solution

    |

  11. Evaluate int e^(x) ((1- sin x)/( 1- cos x) ) dx

    Text Solution

    |

  12. Find the area of the region bounded by the curve y=x^(3) and the lines...

    Text Solution

    |

  13. Show that the points whose position vectors are 5hat(i) + 5 hat(k), 2 ...

    Text Solution

    |

  14. Find the vector equation of the plane passing through the points 3 hat...

    Text Solution

    |

  15. Prove that if a plane has the intercepts a, b, c and is at a distance ...

    Text Solution

    |

  16. Find the equation in vector and Cartesian from of the plane passing th...

    Text Solution

    |

  17. Prove that sin( cos^(-1) ""(3)/(5) + sin^(-1)""(5)/(13) ) = (63)/(65)

    Text Solution

    |

  18. Answer any three questions (b) A house wife wishes to mix together t...

    Text Solution

    |

  19. Answer any three questions (c) Show that f: [-1,1] to R, given by f(...

    Text Solution

    |

  20. Check if the relation R on set of real numbers, defined as R = {(a,b) ...

    Text Solution

    |