SBI PO Mains 2017: Puzzle Quiz - Set 1

Hello and welcome to exampundit. Here is the first Puzzle for SBI PO Mains 2017.

Directions for questions 1 to 5: Answer the questions on the basis of the following information.

Recently, the answers of 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 in the following manner. They obtain the 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 from 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. These data represent question numbers.

Wrong Answer(s)
Blank Answer(s)
 46, 90, 25
 27, 56
 17, 46, 90
 46, 90
 14, 46
 92, 90
 46, 92
 17, 46, 90

1. Which one among the following must have two sources?
1) A
2) B
3) C
4) D

2. How many people (excluding the mastermind) needed to make answer-keys before C could make his answer-key?
1) 2
2) 3
3) 4
4) 5

3. Both G and H were sources to
1) F
2) B
3) I
4) None of the nine

4. Which of the following statements is true?
1) C introduced the wrong answer to question 27.
2) E introduced the wrong answer to question 46.
3) F introduced the wrong answer to question 14.
4) H introduced the wrong answer to question 46.

5. Which of the following two groups of people had identical sources?
I. A, D and G
II. E and H
1) Only I
2) Only II
3) Neither I nor II
4) Both I and II

Directions for questions 6 to 9: Answer the questions on the basis of the following information.

Four families decided to attend the marriage ceremony of one of their colleagues. One family has no kids, while the others have at least one kid each. Each family with kids has at least one kid attending the marriage. Given below is some information about the families, and who reached when to attend the marriage. The family with two kids came just before the family with no kids. Shanthi who does not have any kids reached just before Sridevi’s family. Sunil and his wife reached last with their only kid. Anil is not the husband of Joya. Anil and Raj are fathers. Sridevi’s and Anita’s daughters go to the same school. Joya came before Shanthi and met Anita when she reached the venue Raman stays the farthest from the venue. Raj said his son could not come because of his exams.

6. Who among the following arrived third?
1) Shanthi
2) Sridevi
3) Anita
4) Joya

7. Name the correct pair of husband and wife.
1) Raj and Shanthi
2) Sunil and Sridevi
3) Anil and Sridevi
4) Raj and Anita

8. Of the following pairs, whose daughters go to the same school?
1) Anil and Raman
2) Sunil and Raman
3) Sunil and Anil
4) Raj and Anil

9. Whose family is known to have more than one kid for certain?
1) Raman’s
2) Raj’s
3) Anil’s
4) Sunil’s

Answers & Solutions - Tap to show
If a person copies from one source, he must have the same blank answers as the source and exactly one wrong answer more than the source (as the copier has introduced one wrong answer on his own). If the person copies from two sources, the distinct wrong answers from the two sources would be left blank by the copier and the same wrong answers in the two sources would be copied as it is.
1. 2 A and D have only one source since they have only one wrong answer each. C may have copied from only one source i.e. I and hence, only B has two sources.
2. 3 I did it before C since 27 is the wrong choice for I. Similarly, A, D and E made keys before C. Hence, 4 people made their keys before C.
3. 4 Both G and H can’t be sources to any of F, B or I and hence, (4) is the correct option.
4. 3 F introduced wrong answer to question 14, because nobody else has done question 14 wrong.
5. 4 A, D and G have one distinct wrong answer and no blank answers. So they must have the same source. E and H also have a common wrong answer and no blanks. Hence, both the groups had identical sources.

For questions 6 to 9:
The key to cracking this question is to follow the simple fundamentals in Analytical Reasoning of going 1 line at a time and making a simple table
Arrival Order






Sentence 1 – Family with 2 kids before no kids
Sentence 2 – Shanthi with no kids came before Sridevi
Sentence 3 – Sunil and wife came last with only kid
Sentence 4 – Anil and Joya not husband and wife
Sentence 5 – Anil and Raj are fathers – hence cannot be the family with no kids
Sentence 6 – Sridevi and Anita cannot be the persons with no kid
Sentence 7 – Anil and Joya not husband and wife
Sentence 8 – Joya before Shanti and Anita was already present.
Using the above information, Anil and Raj cannot be married to Shanthi as Shanthi has no kids. Hence,
Sunil has to be married to Sridevi (not with Joya already stated) and Raman with Shanthi.
Arrival Order

6. 1
7. 2
8. 3

9. 2



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