Advertisements
Advertisements
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, 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?
विकल्प
A
B
C
D
Advertisements
उत्तर
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
संबंधित प्रश्न
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 __________
The question in this section is based on a set of conditions. Choose the response that most accurately and completely answer the question.
A panel reviews six contract bids - H, J, K, R, S, and T. No- two bids have the same cost. Exactly one of the bids is accepted. The following conditions must hold:
1. The accepted bid is either K or R and is either the second or the third lowest in cost.
2. H is lower in cost than each of J and K
3. If J is the fourth lowest in cost, then J is lower in cost than each of S and T.
4. If J is not the fourth lowest in cost, then J is higher in cost than each of S and T.
5. Either R or S is the fifth lowest in cost.
Which one of the following could be an accurate list of the bids in order from lowest to highest in cost?
The question in this section is based on a set of conditions. Choose the response that most accurately and completely answer the question.
A panel reviews six contract bids - H, J, K, R, S, and T. No- two bids have the same cost. Exactly one of the bids is accepted. The following conditions must hold:
1. The accepted bid is either K or R and is either the second or the third lowest in cost.
2. H is lower in cost than each of J and K
3. If J is the fourth-lowest in cost, then J is lower in cost than each of S and T.
4. If J is not the fourth lowest in cost, then J is higher in cost than each of S and T.
5. Either R or S is the fifth-lowest in cost.
Which one of the following bids CANNOT be the second-lowest in cost?
Answer the questions on the basis of the information given below.
The head of a newly formed Government desires to appoint five of the six elected ministers P, Q, R, S, T and U to portfolios of Foreign, Industry and Commerce, Agriculture, Rural Development and Human Resources. U does not want any portfolio if S gets one of the five. R wants either Foreign or Human Resources or no portfolio. Q says that if S gets Industry and Commerce or Rural Development then she must get the other one. T insists on a portfolio if P gets one.
If P gets Foreign and R gets Human Resources, then which is not a valid assignment of Agriculture and Rural Development?
The question is based on a set of conditions. Choose the response that most accurately and completely answer the question.
At the snack café at a party, Ali, Bina, Champak and Diya are eating cookies. There are five kinds of cookies to choose from – chocolate chip cookies, oatmeal cookies, sugar cookies, peanut butter cookies and raisin cookies. Each of these four people eats at least two kinds of cookies. Their choices are governed by the following rules:
At most two of them eat oatmeal cookies
At least two of them eat sugar cookies
Ali does not eat any sugar cookies
Bina and Champak do not eat the same type of cookies Bina eats chocolate chip cookies
Champak eats sugar cookies
No one eats both raisin cookies and sugar cookies
If someone eats raisin cookies, they also eat peanut butter cookies
Which pair of cookie types could each be eaten by at least three different people?
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 presentation does Vineet do?
Read the information given below to answer the question.
Diana is three times older than Jackson. Edward is half the age of Stephen. Jackson is older than Edward.
Which one of the following can be inferred?
The question is based on a set of conditions. Choose the response that most accurately and completely answer the question.
There are five flagpoles lined up next to each other in a straight row in front of a school. Each flagpole flies one flag (red, white, or blue) and one pennant (green, white, or blue). The following are conditions that affect the placement of flags and pennants on the poles: On a given flagpole, the pennant and the flag cannot be the same colour. Two adjacent flagpoles cannot fly the same colour flags. Two adjacent flagpoles cannot fly the same colour pennants. No more than two of any colour flag or pennant may fly at one time.
If the 2nd flag is red and the 3rd flag is white, and the 4th pennant is blue, then which one of the following must be true?
The question is based on a set of conditions. Choose the response that most accurately and completely answer the question.
There are five flagpoles lined up next to each other in a straight row in front of a school. Each flagpole flies one flag (red, white, or blue) and one pennant (green, white, or blue). The following are conditions that affect the placement of flags and pennants on the poles: On a given flagpole, the pennant and the flag cannot be the same colour. Two adjacent flagpoles cannot fly the same colour flags. Two adjacent flagpoles cannot fly the same colour pennants. No more than two of any colour flag or pennant may fly at one time.
If the 1st flag and the 2nd pennant are the same colour, the 2 and flag and the 3rd pennant are the same colour, the 3rd flag and the 4th pennant are the same colour, and the 4th flag and the 5th pennant are the same colour, then which one of the following must be true?
Read the following information carefully and answer the question given below.
Nine players - G, H, I, J, K, L, M, N and O – have to be put in three teams. Each team will consist of three players and each player will appear only once in a team. The teams must be arranged according to the following conditions.
i. I and N must be in the same team.
ii. K and L must be in the same team.
iii. O and J cannot be in the same team.
iv. M must be in the second team.
v. Either J or M or both must be in the team with H
Which of the following players could be in a team together?
