Home
Class 14
REASONING
A question paper had ten questions. Each...

A question paper had ten questions. Each question could only be answered as True (T) or False (F). Each candidate answered all the questions. Yet, no two candidates wrote the answers in anidentical sequence. How many different sequences of answers are possible ?

A

20

B

40

C

512

D

1024

Text Solution

Verified by Experts

The correct Answer is:
D

According to the question, each question can be answered in two ways i.e., either True or False. So, required possible number of different sequences of answers = `2^10 = 1024`.
Promotional Banner

Topper's Solved these Questions

  • MATHEMATICAL ABILITY AND REASONING

    LUCENT PUBLICATION|Exercise EXERCISE (Type-V: Data Based Problem) |6 Videos
  • LOGICAL VENN DIAGRAMS

    LUCENT PUBLICATION|Exercise EXERCISE -4|3 Videos
  • MATHEMATICAL OPERATIONS

    LUCENT PUBLICATION|Exercise EXERCISE-3|34 Videos

Similar Questions

Explore conceptually related problems

There are 10 true - false statements in a question paper. How many sequences of answers are possible ?

A test paper has 40 questions. Each question that is answered correctly is given 2 marks. Azar answered 37 questions correctly. How many marks did Azar score in the test?

In a 'multiple choice question' test there are eight questions. Each question has four alternative of which only one is correct. IF a candidate answers all the questions by choosing one answer for each question, then the number of ways to get exactly 4 correct answer is

There are 4 multiple choice questions in an examination. How many sequences of answers are possible, if each question has 2 choices?

There are 10 true-false statements in a question paper.How many sequences of answers are possible in which exactly three are correct?

In an examination paper of five questions, 5% of the candidates answered all of them and 5% answered none. Of the rest, 25% candidates answered only one question and 20% answered 4 questions. If 396 candidates answered either 2 questions or 3 questions, the number of candidates that appeared for the examination was

LUCENT PUBLICATION-MATHEMATICAL ABILITY AND REASONING-EXERCISE (Type-VI: Puzzle Based Problem)
  1. There is a cycle race going on in a circular track and 1/5th of the to...

    Text Solution

    |

  2. Jeewan and Ashish have the same number of marbles when they start play...

    Text Solution

    |

  3. Deepu buys some shoestrips and then 4 times of that she buys packet pi...

    Text Solution

    |

  4. Grass in lawn grows equally thick and in a uniform rate. It takes 24 d...

    Text Solution

    |

  5. The owner of a local jewellery store hired 3 watchmen to guard his dia...

    Text Solution

    |

  6. In a bag a person can carry 10 books. The books are Mathematics, Physi...

    Text Solution

    |

  7. Deepu has certain number of Flowers. It is not less than 15 and not mo...

    Text Solution

    |

  8. There are ten students standing in a line, not all of whom have the sa...

    Text Solution

    |

  9. Prakash has some dry fruit boxes with him to sell. He sells them eithe...

    Text Solution

    |

  10. A rich merchant had collected many gold coins. He did not want anybody...

    Text Solution

    |

  11. You are given two (unmarked) containers of capacity 9 litres and 4 lit...

    Text Solution

    |

  12. Naughts and crosses is a game played on a 3 xx 3 board of squares (lab...

    Text Solution

    |

  13. There are fourteen teams playing in a tournament. If every team plays ...

    Text Solution

    |

  14. A man fills a basket with eggs in such a way that the number of eggs a...

    Text Solution

    |

  15. A question paper had ten questions. Each question could only be answer...

    Text Solution

    |

  16. A cuboid has six sides of different colours the red side is opposite t...

    Text Solution

    |

  17. There are three cans A, B and C. The capacities of 'A', 'B' and 'C' ar...

    Text Solution

    |

  18. There are four persons 'A', 'B', 'C', 'D' and 'A' has some coins. 'A' ...

    Text Solution

    |

  19. In a carrom board game competition, m boys and n girls (m gt n gt 1) o...

    Text Solution

    |

  20. A girl counted in the following way on the fingers of her left hand : ...

    Text Solution

    |