Home
Class 11
MATHS
In an examinations there are three multi...

In an examinations there are three multiple choice questions and each questions has 4 choices. Find the number of ways in which a student can fail to get all answer correct.

A

11

B

12

C

27

D

63

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Exercise|136 Videos

  • PARABOLA

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|30 Videos

  • PROBABILITY

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|45 Videos

Similar Questions

Explore conceptually related problems

In a examination there are four multiple choice questions and each question has 4 choices. Number of ways in which a student can fail to get all answer correct is (i) 256 (ii) 254 (iii) 255 (iv) 63

In an examination a student has to answer 4 questions out of 5 questions; questions 1 and 2 are however compulsory. Determine the number f ways n which the student can make the choice.

The number of ways in which 12 students can be equally divided into three groups is

An examination consists of 10 multiple choice questions, where each question has 4 options, only one of which is correct. In every question, a candidate earns 3 marks for choosing the correct opion, and -1 for choosing a wrong option. Assume that a candidate answers all questions by choosing exactly one option for each. Then find the number of distinct combinations of anwers which can earn the candidate a score from the set {15, 16,17,18, 19, 20}.

There are 5 questions in a multiple choice examination in which each question has 3 possible answers.Find the probability that a student gives 4 correct answers by guess only.

In an entrance test, there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student knows the answer to a question is 90%. If the gets the correct answer to a question, then find the probability that he was guessing.

In an entrance test, there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student knows the answer to a question is 90%. If the gets the correct answer to a question, then find the probability that he was guessing.

In a test of 10 multiple of choice questions of one correct answer each having 4 alternative answers, the number of ways to put ticks at random for the answer to all the questions is

Multiple choice questions (MCQs) choose the correct option Expand ELISA.

There are three sections in a question paper, each containing 5 questions. A candidate has to solve any 5 questions, choosing at least one from each section. Find the number of ways in which the candidate can choose the questions.

OBJECTIVE RD SHARMA ENGLISH-PERMUTATIONS AND COMBINATIONS-Chapter Test
  1. The number of diagonals that can be drawn by joining the vertices of a...

    Text Solution

    |

  2. The sum of the digits in unit place of all the numbers formed with the...

    Text Solution

    |

  3. In an examinations there are three multiple choice questions and each ...

    Text Solution

    |

  4. There are 10 points in a plane, out of these 6 are collinear. If N is ...

    Text Solution

    |

  5. Ramesh has 6 friends. In how many ways can be invite one or more of th...

    Text Solution

    |

  6. If Pm stands for ^m Pm , then prove that: 1+1. P1+2. P2+3. P3++ndotPn=...

    Text Solution

    |

  7. The number of ways four boys can be seated around a round talble in fo...

    Text Solution

    |

  8. We are required to form different words with the help of the letters o...

    Text Solution

    |

  9. A candidate is required to answer 6 out of 10 questions, which are ...

    Text Solution

    |

  10. The number of ways in which 6 men and 5 women can dine at a round tabl...

    Text Solution

    |

  11. A students is to answer 10 out of 13 questions in an examminations suc...

    Text Solution

    |

  12. Write the number of all possible words that can be formed using the ...

    Text Solution

    |

  13. In a group of boys, two boys are brothers and six more boys are pres...

    Text Solution

    |

  14. Nishi has 5 coins, each of the different denomination. Find the number...

    Text Solution

    |

  15. Write the number of ways in which 5 boys and 3 girls can be seated in ...

    Text Solution

    |

  16. How many different nine-digit numbers can be formed from the digits of...

    Text Solution

    |

  17. The number of 4 digit even numbers that can be formed using 0, 1, 2, 3...

    Text Solution

    |

  18. The number of ways in which n ties can be selected from a rack display...

    Text Solution

    |

  19. There are n-points (ngt2) in each to two parallel lines. Every point o...

    Text Solution

    |

  20. The maximum number of points of intersection of 8 circles is

    Text Solution

    |