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Which of the Following Statements is True? - Mathematics

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Question

Recently, the answers to a test held nationwide were leaked to a group of unscrupulous people. The investigative agency has arrested the mastermind and nine other people A, B, C, D, E, F, G, Hand I in this matter. interrogating them, the following facts have been obtained regarding their operation. Initially, the mastermind obtains the correct answer-key. AU the others create their answer-key from one or two people who already possess the same. These people are called his/her "'sources". If the person has two sources. then he/she compares the answer-keys obtained for both sources. If the key to a question from both sources is identical, it is copied, otherwise, it is left blank. If the person has only one source, he/she copies the source's answer into his/her copy. Finally, each person compulsorily replaces one of the answers (not a blank one) with a wrong answer in his/her answer key. 
The paper contained 200 questions; so the investigative agency has ruled out the possibility of two or more of them introducing wrong answers to the same question. The investigative agency has a copy of the correct answer key and has tabulated the following data. This data represents question numbers.

Name Wrong Answer(s) Blank Answer(s)
A 45 ___
B 96 46, 90, 25
C 27, 56 17, 46, 90
D 17 ____
E 46, 90 ____
F 14, 46 92, 90
G 25 ____
H 46, 92 ____
I 27 17, 26, 90

Which of the following statements is true?

Options

  • introduced the wrong answer to question 27

  • E introduced the wrong answer to question 46

  • F introduced the wrong answer to question 14

  • H introduced the wrong answer to question 46

MCQ
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Solution

F introduced the wrong answer to question 14

shaalaa.com
Analytical and Logical Reseasoning
  Is there an error in this question or solution?
2014-2015 (May) Set 1

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