Reasoning

ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q41.
Four of the following five are alike in a certain way. Which one is NOT like the other four?
1) Jumping 2) Running
3) Jogging 4) Exercising
5)Walking
Answer : Exercising
Explanation : All others are different modes of exercising.
View Answer

Q42.
In a row of girls Rozali is 22nd from the left and 13th from the right. How many girls are there in the row ?
1) 34 2) 35
3) 36 4) 38
5)None of these
Answer : 34
Explanation :
Total girls = ( Rank from left + Rank from right) -1
= (22 + 13) - 1 = 34

View Answer

Q43.
‘ACEG’ is related to ‘ZXVT’ in the same way as ‘HJLN’ is related to - 
1) TRPN 2) SQOM
3) OQSU 4) RPNL
5)None of these
Answer : SQOM
Explanation :
A  C   E  G H  J    L   N
Z   X   V   T S  Q   O  M
The arrangement is reverse order of English alphabets.
View Answer

Q44.
Direction  :  A cube is painted red and all its faces and is then divided into 343 equal cubes.

How many cubes will have at least one face painted ?
1) 127 2) 178
3) 218 4) 279
5)None of these
Answer : 218
Explanation : The number of cubes whose at least one face is painted = One face painted + two face painted + three face painted = One face visible + two face visible + three face visible = Total - (No face visible) = 343 - 125 = 218
View Answer

Q45.
Direction  :  A cube is painted red and all its faces and is then divided into 343 equal cubes.
How many cubes have no face painted ?
1) 27 2) 64
3) 125 4) 216
5)None of these
Answer : 125
Explanation : The number of cubes where no face is painted = The number of cubes who one face is visible
 =  (a - 2)3 = (7 - 2)3 = 125.
View Answer

Q46.
Direction  :  A cube is painted red and all its faces and is then divided into 343 equal cubes.

How many cubes will have one face painted ?
1) 112 2) 148
3) 150 4) 162
5)None of these
Answer : 150
Explanation : The number of cubes whose one face is painted = The number of cubes who one face is visible = 6 (a - 2)2 = 6 (7 - 2)2 = 150
View Answer

Q47.
Direction  :  A cube is painted red and all its faces and is then divided into 343 equal cubes.

How may cubes will have two faces painted ?
1) 45 2) 50
3) 56 4) 60
5)None of these
Answer : 60
Explanation :
Since, the cube is divided into 343 equal cubes i.e. (7)3 equal cubes, assume the edge length of the cube to be 7, (a = 7). This is done using the idea of unit cubes. (A cube of edge length a unit can be divided into a3 unit cubes)

The number of cubes whose two faces are painted = The number of cubes whose two faces are visible = 12 (a - 2) = 12 (7 - 2) = 60
View Answer

Q48.
Direction  :  A cube is painted red and all its faces and is then divided into 343 equal cubes.

How many cubes will have three faces painted ?
1) 0 2) 4
3) 8 4) 16
5)None of these
Answer : 8
Explanation :
Since the cube is divided into 343 equal cubes i.e. (7)3 equal cubes, assume the edge length of the cube to be 7, (a = 7). This is done using the idea of unit cubes. (A cube of edge length a unit can be divided into a3 unit cubes)

The number of cubes whose three face are painted is equal to the number of cubes whose three faces are visible. (Since only those faces which are visible can be painted). 
Hence, the number is 8.
View Answer

Q49.
Directions : Read the following information carefully to answer the questions given below:
i) There are six different books on different subjects P, Q, K, S, T and U. 
These books are kept one above the other on a shelf. These books belong to six different persons — A, B, C, D, E and F. It is not necessary that the orders of these books and persons are the same.
ii)  Only book of subject Q is kept between the books of subject P and T and only book of subject S is kept between books of subject P and U. The book of subject R is immediately above the book of subject T.
iii) C’s book is kept on the top. A does not have books on subjects T and S. The book on subject P belongs to F. The book on subject U belongs neither to B nor to A. D’s book is kept at the bottom.

The book on which of the following subjects is kept on the top ?
1) T 2) R
3) U 4) D.I
5)None of these
Answer : R
Explanation :
              Books Persons
R C
T B/ E
Q A
P F
S B/E
U D
View Answer

Q50.
Directions : Read the following information carefully to answer the questions given below:
i) There are six different books on different subjects P, Q, K, S, T and U. 
These books are kept one above the other on a shelf. These books belong to six different persons — A, B, C, D, E and F. It is not necessary that the orders of these books and persons are the same.
ii) Only book of subject Q is kept between the books of subject P and T and only book of subject S is kept between books of subject P and U. The book of subject R is immediately above the book of subject T.
iii) C’s book is kept on the top. A does not have books on subjects T and S. The book on subject P belongs to F. The book on subject U belongs neither to B nor to A. D’s book is kept at the bottom.

Who owns the book on subject U ?
1) B 2) E
3) D 4) C
5)None of these
Answer : D
Explanation :
              Books Persons
R C
T B/ E
Q A
P F
S B/E
U D
View Answer