The investigative body has arrested the mastermind called 'JEJO' and nine other people namely Abhay, Bhanu, Chandu,Dheeraj,Ekansh, Faisal, Girdhar, Harmeet and Ishant in a recent matter wherein the answers of a test held nationwide were leaked to a group of unscrupulous people.Interrogating them, the following facts have been obtained regarding their operation. Initially 'JEJO' obtains the correct answer-key. All 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 answers 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 which represents question numbers.
Name
Wrong Answer(s)
Blank Answers(s)
Abhay
46
-
Bhanu
96
40, 90, 28
Chandu
27, 56
17, 46, 90
Dheeraj
17
-
Ekansh
46, 90
-
Faisal
14, 46
92, 90
Girdhar
25
-
Harmeet
46, 92
-
Ishant
27
17, 26, 90
Question
1
Which one among the following must have two sources ?
A.
Abhay
B.
Bhanu
C.
Chandu
D.
Dheeraj
2
How many people (excluding JIJO) needed to make answer keys before Chandu could make his answer key?
A.
2
B.
3
C.
4
D.
5
3
Both Girdhar and Harmeet were sources to:
A.
Faisal
B.
Bhanu
C.
Chandu
D.
None of above
4
Which of the following statements is true?
A.
Chandu introduced the wrong answer to question 27.
B.
Ekansh introduced the wrong answer to question 46.
C.
Faisal introduced the wrong answer to question 14.
D.
Harmeet introduced the wrong answer to question 46.