Home
Class 12
MATHS
In a class having 60% boys, 5% of the bo...

In a class having 60% boys, 5% of the boys and 10% of the girls have an I.Q. of more than 150. A student is selected at random and found to have an I.Q. of more than 150. Find the probability that the selected student is a boy.

Promotional Banner

Topper's Solved these Questions

  • Appilications of Derivative

    JMD PUBLICATION|Exercise Exercise|37 Videos

Similar Questions

Explore conceptually related problems

In a cer tain college, 4% of boys and 1% of girls are taller than 1.75 metres. Furthermore, 60% of the students in the college are girls. A student is selected at random from the college and is found to be taller than 1.75 metres. Find the probability that the selected student is girl.

A class consists of 10 boys and 8 girls. Three students are selected at random. Find the probability that the selected group has : all Boys.

40% students of a college reside in hostel and the remaining reside outside. At the end of the year, 50% of the hostlers got A grade while from outside students, 30% got A grade in the examination. At the end of the year, a student of the college was chosen at random and was found to have gotten A grade. What is the probability that the selected student was a hostler ?

A class consists of 10 boys and 8 girls. Three students are selected at random. Find the probability that the selected group has : 2 boys and 1 girl.

A class consists of 10 boys and 8 girls. Three students are selected at random. Find the probability that the selected group has : all girls.

In a class of 25 students with roll numbers 1 to 25, a student is picked up at random to answer a question. Find the probability that the roll number of the Selected student is either a multiple of 5 or of 7.

In Class XI of a school 40% of the students study Mathematics and 30% study Biology. 10% of the class study both Mathematics and Biology. If a student is selected at random from the class, find the probability that he will be studying Mathematics or Biology.

In class XI of a school 40% of the students study Mathematics and 30% study Biology 10% of the class study both Mathematics and Biology. If a student is selected at random from the class, find the probability that he will be studying Mathematics or Biology.

JMD PUBLICATION- A Gift paper from the publishers-Example
  1. In a class having 60% boys, 5% of the boys and 10% of the girls have a...

    Text Solution

    |

  2. If a*b=a^b then (2*1)*2=

    Text Solution

    |

  3. The value of sin(cot^-1x) is equal to

    Text Solution

    |

  4. If A is matrix of order x*2 and B is of 2*y and (AB)' is of 4*3 then v...

    Text Solution

    |

  5. If A and B are square matrices of order 3 such that absA = -1, absB = ...

    Text Solution

    |

  6. I.F. Of the differential equation dy/dx+2y=e^(2x) is :

    Text Solution

    |

  7. If f(x)= {(mx+1,,x,le,5),(3x-5,,x,>,5):} is continuous, then the value...

    Text Solution

    |

  8. d/dx(e^(2sin^-1x)) =

    Text Solution

    |

  9. The value of int(cosec^2x)/sec^2xdx is

    Text Solution

    |

  10. intdx/(9+x^2) =

    Text Solution

    |

  11. The number of arbitrary constants in the general solution of a differe...

    Text Solution

    |

  12. Find the area of the parallelogram whose diagonals are a = 3 hat i + h...

    Text Solution

    |

  13. Find |veca-vecb|, if two vectors veca and vecb are such that |veca|=2,...

    Text Solution

    |

  14. The length of the perpendicular drawn from the origin to 2x-3y+6z+21=0

    Text Solution

    |

  15. A line makes 90^@, 135^@, 45^@ with x, y and z axes respectively than ...

    Text Solution

    |

  16. The point does not lie in half plane x + 2y le 10 is

    Text Solution

    |

  17. If a four digit number is formed by using the digits 1,2,3 and 5 with ...

    Text Solution

    |

  18. If [[e^x,e^y],[e^y,e^x]] = [[1,1],[1,1]] then (x,y) =

    Text Solution

    |

  19. If A = [[2x,5],[6,3]] is singular then x^2 =

    Text Solution

    |

  20. d/dx{tan^-1((x+a)/(1-ax))} =

    Text Solution

    |

  21. Slope of normal to the line 2x-3y+4=0 is

    Text Solution

    |