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प्रश्न
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 two groups of people has identical sources?
1) A, D and G
2) E and H
विकल्प
Only (I)
Only (II)
Neither (I) nor (II)
Both (I) and (II)
उत्तर
Only (I)
Explanation:
On the basis of given information, the following result can be obtained. Initially, mastermind obtained correct answer key
W.A. = Wrong answer
B.A. = Blank answer
(1) The result shows that A, D and G obtained the answer key from mastermind.
(2) E and H obtained the answer key from A.
(3) F obtained the answer key from both E and H.
(4) I obtained the answer key from both E and D.
(5) C obtained the answer key from I only.
(6) B obtained the answer key from E and G.
And about the wrong answer
(1) A, D and G replaced the answers 46, 17 and 25 respectively.
(2) H replaced the answer 92.
(3) E replaced the answer 90.
(4) F replaced the answer 14.
(5) I replaced the answer 27.
(6) C replaced the answer 56.
(7) B replaced the answer 96.
A, D and G have identical sources.
APPEARS IN
संबंधित प्रश्न
Instructions for Question: Read the information given below to answer the question.
(i) Mohan‘s reading schedule consists of reading only subject on a given day of the week.
(ii) The subjects are Physics, Chemistry, Mathematics, Biology, and Social Science.
(iii) Monday to Saturday are reading days including one day only for play. Sunday is a complete holiday for Mohan.
(iv) Mathematics day is neither on the first day nor on the last day but earlier than the Chemistry day.
(v) Biology day is on the immediate next day of Chemistry day.
(vi) Physics day is on the immediate previous day of the play day. (vii) Biology day and Social Science day have a gap of two days between them.
(viii) Social Science day is on the immediate next day of the play day.
Which day is Social Science day?
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COMPENSATION
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