Thursday, 2 June 2016

Night Class: Reasoning Quiz



Directions (Q. 1-5): In each of the question below three statements are given followed by conclusion/group of conclusions numbered I and II. You have to assume all the statements to be true even if they seem to be at variance with commonly known facts and then decide which of the following given two conclusions logically follows from the information given in the statements. 1) If only conclusion I follows. 2) If only conclusion II follows. 3) If either conclusion I or conclusion II follows. 4) If neither conclusion I nor conclusion II follows. 5) If both conclusion I and II follow. 1. Statements: Some plants are trees. All plants are stems. All stems are flowers. Conclusion: I. Some plants are flowers. II. All stems being trees is a possibility.

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2. Statements: Some plants are trees. All plants are stems. All stems are flowers. Conclusion: I. All trees can never be flowers. II. Any tree which is a plant is a flower.
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3. Statements: All kites are papers. No paper is a pencil. All pencils are black. Conclusion: I. All kites being black is a possibility. II. All black being papers is a possibility.
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4. Statements: Some buses are trains. Some trains are jets. All jets are scooters. Conclusion: I. Some buses are scooters. II. Some trains are scooters.
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5. Statements: Some soaps are detergents. No conditioner is soap. All detergents are shampoo. Conclusion: I. Some detergents are not conditioner. II. Some conditioners are not shampoo.
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Directions: (Q. 6-10): Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data given in the statements are sufficient to answer the questions. Read both the statements and give answer 1) If the data in statement I alone are sufficient to answer the question, while the data in statement II are not sufficient to answer the question. 2) If the data in statement II alone are sufficient to answer the question, while the data in statement I are not sufficient to answer the question. 3) If the data either in statement I alone or statement II alone are sufficient to answer the question. 4) If the data in statement I and statement II together are not sufficient to answer the question. 5) If the data in statement I and statement II together are necessary to answer the question. 6. P, Q, R, S and T are sitting in a row. What is the position of Q from the right end? I. P is sitting at one end second right of S, who is the immediate neighbour of Q and R. II. T is to the left of Q.
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Solution:
From I, we get, T Q S R P or T R S Q P. Thus I is not sufficient. From II,we get, T Q. So II alone is not sufficient. From I and II we get, T Q S R P. Thus, both the statements are necessary.

7. Who among M, P, J, K and A toy's is the cheapest but one? I. P is costlier then K and A. II. J is cheaper than A and M.
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Solution:
From I, we get, P > K A. Thus, I is not sufficient. From II, we get, A M > J. Thus, II is not sufficient. Thus, neither I nor II is sufficient.

8. What is R's rank from the bottom in a class of 40 students? I. P's position fifth from the top and there are five students between P and R. II. Q's position is seventh from bottom and there are four students between Q and K.
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Solution:
From I, we get, R's rank from Top = 5+5= 10, R’s rank from bottom = 40-(5+5) = 30From II we did not get any relevant information about R.

9. Who is the brother in law of Nitya? I. Nitya is the mother of Vinita and is married to brother of Asha. II. Nitin and Ashok are brothers of Asha. Lata is wife of Ashok.
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From I and II we get Ashok as the brother in law of Nitya. Hence I and II alone are not sufficient. But I and II together are necessary to answer.

10. Toward which direction is A with respect to his starting point? I. A walked 10m west, took a left turn and walked 15 m again took a left turn and walked 10m. II. A walked 15 m west, took a left turn and walked 10m again took a left turn and walked 15 m.
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Solution:
Let D be the new position of A with respect to its previous position From I we get, D is to the south of A. Thus I alone is sufficient. From II we get, D is to the south of A. Thus, II alone is sufficient.

               


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