Home
Class 12
MATHS
On a multiple choice examination with th...

On a multiple choice examination with three possible options for each of the five questions, what is the probability that a candidate would get four or more correct answers just by guessing?

Text Solution

Verified by Experts

The correct Answer is:
`= 11/243`
Promotional Banner

Topper's Solved these Questions

  • SIMILAR TEST 3

    ARIHANT PRAKASHAN|Exercise SECTION C|14 Videos
  • SIMILAR TEST 3

    ARIHANT PRAKASHAN|Exercise SECTION C|14 Videos
  • RELATIONS AND FUNCTIONS

    ARIHANT PRAKASHAN|Exercise Chapter Test (6 MARKS Questions) |3 Videos
  • THREE DIMENSIONAL GEOMETRY

    ARIHANT PRAKASHAN|Exercise CHAPTER TEST|24 Videos

Similar Questions

Explore conceptually related problems

In an examination there are twenty multiple choice question each of which is supplied with four possible answers. What is the probability that a candidate would score 80% or more in the answer to these questions ?

In answering a question on a multiple choice test, a student either knows the answer or guesses. Let 3/4 be the probability that he knows the answers and 1/4 be the probability that he guesses. Assuming that a student who guesses the answer will be correct with probability 1/4 What is the probability that the student knows the answer, given that he answered it correctly?

Each question given below has four possible answers out of which only one is correct. Choose the correct one. veca.vecbxxveca =

ARIHANT PRAKASHAN-SIMILAR TEST 3 -SECTION B
  1. Solve the following LPP graphically Minimise Z = 5x+10 y Subject ...

    Text Solution

    |

  2. Prove that the following. [[1+a,1,1],[1,1+b,1],[1,1,1+c]] = abc(1+1/...

    Text Solution

    |

  3. Show that the following system is inconsistent. (a-b)x+(b-c)y+(c-a)z...

    Text Solution

    |

  4. If A=[{:(3,-2),(4,-2):}], then find k such that A^(2)=kA-2I .

    Text Solution

    |

  5. On a multiple choice examination with three possible options for each ...

    Text Solution

    |

  6. An instructor has a question bank consisting of 300 easy true/false qu...

    Text Solution

    |

  7. If y = log (x+sqrt(1+x^(2))) , then find y(2)(0).

    Text Solution

    |

  8. Differentiate the following function w.r.t. x, (logx)^(x)+x^(logx).

    Text Solution

    |

  9. Find the equation of normal to the curve y = e^(sin x) " at "x = pi...

    Text Solution

    |

  10. Find the approximate value of f(2.01), where f(x) = 4x^(2) + 5x+2

    Text Solution

    |

  11. Discuss the continuity of the function f(x) at x=1/2 , when f(x) is de...

    Text Solution

    |

  12. Integrate int cot^(-1) x dx.

    Text Solution

    |

  13. Integrate int sqrt (7x-10 -x^(2)) dx

    Text Solution

    |

  14. Evaluate int(0)^(pi) |cos x |dx.

    Text Solution

    |

  15. Find the area bounded by y = |x-1| and y=1 .

    Text Solution

    |

  16. Solve (dy)/(dx) +(sec x) y = tan x.

    Text Solution

    |

  17. Find the area of the parallelogram whose diagonals are the vectors 3ha...

    Text Solution

    |

  18. Find the angle between the lines whose direction cosines are given by ...

    Text Solution

    |

  19. Prove that the point (1,2,3),(-1,1,0),(2, 1, 3) and (1, 1, 2) are copl...

    Text Solution

    |

  20. Find the points of intersection of the line (x-1)/1=(y+2)/ 3 =(z-1)/(...

    Text Solution

    |