Advertisements
Advertisements
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, H and I in this matter. Interrogating them, the following facts have been obtained regarding their operation. Initially, the mastermind 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 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 | 2756 | 17,46,90 |
| D | 17 | - |
| E | 4690 | - |
| F | 1446 | 92,90 |
| G | 25 | - |
| H | 4692 | - |
| I | 27 | 17,26,90 |
Which one of the following must have two sources?
Options
A
B
C
D
Advertisements
Solution
B
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.
Only B have two sources. Because B obtained the answer key E and G.
APPEARS IN
RELATED QUESTIONS
Read the information carefully to answer the question.
A tourist can tour utmost four places out of A, B, C, D, E, F and G. Out of four, not more than two can come under holiday tour and at least two must come under business trip. The break up is as follows:
Four members have to be nominated to a Committee and there are six candidates: A, B, C, D, E and F. The following restrictions hold good:
(A) If A is nominated, then D does not find any place.
(B) If B is nominated, then either E or F has to be nominated, but not both.
(C) If C is nominated, then both D and E have to be nominated.
Which one of the following is an acceptable combination?
Some information is provided in the form of statements. On the basis of that information find the answer to the questions which follow.
1. A cube has six sides each of a different colour.
2. The red side is opposite black
3. The green side is between red and black
4. The blue side is adjacent to white
5. The brown side is adjacent to blue 6. The red side is face down.
The four colours adjacent to green are __________
Read the following and answer the questions:
Six persons— P, Q, R, S, T and W work in an Organisation. Each of them likes different colours, viz., Black, White, Blue, Green, Red and Yellow and their salaries are also different. The person who earns maximum does not like Blue or White colour. The person who earns the least does not like Black or Red colour. R likes Yellow colour and his salary is the second maximum. P likes White colour and earns more than T but less than W. Q likes Black colour who earns less than P but more than T. S likes Blue colour and T likes Red colour.
If they are arranged in the descending order according to their salaries, who will occupy the third position?
Read the following and answer the questions:
Six persons— P, Q, R, S, T and W work in an Organisation. Each of them likes different colours, viz., Black, White, Blue, Green, Red and Yellow and their salaries are also different. The person who earns maximum does not like Blue or White colour. The person who earns the least does not like Black or Red colour. R likes Yellow colour and his salary is the second maximum. P likes White colour and earns more than T but less than W. Q likes Black colour who earns less than P but more than T. S likes Blue colour and T likes Red colour.
W likes the colour
The question is based on a set of conditions. Choose the response that most accurately and completely answer the question.
Mercotek carried out a study to compare the productivity of its night shift with that of its day shift Every week the company’s six crews–F, G, H, R, and T-were ranked first (most productive) to sixth (least productive). There were notices. For any given week, either G and T were the two night-shift crews or else S and H were- the four other crew(s) were-the the day-shift crews for that week.
The following relationships held for every week of the study:
F is more productive than G.
R is more productive than S.
R is more productive than T.
S is more productive than H. and G is more productive than T.
If the night-shift crews rank fifth and sixth for a given week of the study, then which one of the following could also be true of that week?
Answer the following questions based on the statements given below:
(i) There are 3 poles on each side of the road.
(ii) These six poles are labelled A, B, C, D, E and F
(iii) The poles are of different colours namely Golden, Silver, Metallic, Black, Bronze and White.
(iv) The poles are of different heights.
(v) E, the tallest pole, is exactly opposite to the Golden coloured pole.
(vi) The shortest pole is exactly opposite to the Metallic coloured pole.
(vii) F, the Black coloured pole, is located between A and D.
(viii) C, the Bronze coloured pole, is exactly opposite to A.
(ix) B, the Metallic coloured pole, is exactly opposite to F.
(x) A, the White coloured pole, is taller than C but shorter than D and B.
Which is the second tallest pole?
Read the information given below to answer the question.
(i) Kareena's dieting schedule consists of having only one fruit on a given day of the week.
(ii) Dietician has prescribed banana, papaya, pomegranate, apple and grape from Sunday to Friday, one day being a fasting day. Kareena cannot eat any fruit on Saturday.
(iii) Pomegranate day is neither on the first day nor on the last day but earlier than the papaya day.
(iv) Apple day is on the immediate next day of papaya day.
(v) Banana day is on the immediate previous day of the fasting day.
(vi) Apple day and grape day must have a gap of two days between them.
(vii) Grape day is the day immediately following the fasting day.
Which day is pomegranate day?
Read the following information carefully and answer the question given below:
Five friends Satish, Rajesh, Rehman, Rakesh and Vineet- each presents one paper to their class on Physics, Zoology, Botany, English or Geology - one day a week, Monday through Friday.
(i) Vineet does not present English and does not give his presentation on Tuesday.
(ii) Rajesh makes the Geology presentation and does not do it on Monday or Friday.
(iii) The Physics presentation is made on Thursday.
(iv) Rehman makes his presentation, which is not in English, on Wednesday.
(v) The Botany presentation is on Friday and not by Rakesh.
(vi) Satish makes his presentation on Monday.
What day does Rakesh make his presentation on?
Read the following information carefully and answer the questions given below.
(i) Five friends A, B, C, D and E travelled to five different cities of Chennai, Kolkata, Delhi, Bengaluru and Hyderabad by different modes of transport viz. bus, train, aeroplane, car and boat from Mumbai.
(ii) The person who travelled to Delhi did not travel by boat.
(iii) C went to Bengaluru by car and B went to Kolkata by aeroplane.
(iv) D travelled by boat whereas E travelled by train.
(v) Mumbai is not connected by bus to Delhi and Chennai.
Which of the following combinations of person and mode is not correct?
Read the following information carefully and answer the question given below.
Shopper's Stop offers exactly 10 types of perfumes - both domestic and export varieties of Woods, Proposal, Rose, Neesh and Hydra. Shopper’s Stop is having a sale on some of these types of perfumes. The following conditions must apply:
i. Export Rose is on sale: domestic Proposal is not.
ii. If both types of Rose are on sale, then all Hydra is.
iii. If both types of Woods are on sale, then no Neesh is
iv. If neither type of Woods is on sale, then domestic Rose is.
v. If either type of Neesh is on sale, then no Hydra is.
If exactly four of the five types of export perfume are the only perfume on sale, then which one of the following could be true?
