SOLUTION: Q... Rohit, Kunal, Ashish and John are students of a school. Three of them stay far frbm the school and one near it. Two study in class IV, one in class V and one in class VI. T

Question 1140699: Q...
Rohit, Kunal, Ashish and John are students of a school. Three of them stay far
frbm the school and one near it. Two study in class IV, one in class V and one in
class VI. They study Hindi, Mathematics, Social Science and Science. One is good
at all the four subjects while another is weak in all of these. Rohit stays far from
the school and is good at Mathematics only while Kunal is weak in Mathematics only and stays close to the school. Neither of these two nor Ashish studies in class
VI. One who is good at all the subjects studies in class VName the boy who is good at all the subjects.
(a) Rohit (b) Kunal (c) Ashish (d) John
39. Name the boy who is weak in all the subjects.
(a) Rohit (6) Kunal (c) Ashish (cf) John
40. Which two boys are good at Hindi ?
(a) Rohit and Kunal (6) Kunal and Ashish
(c) Ashish and John (d) John and Rohit
41. Which two boys are good at Mathematics ?
(a) Rohit and Ashish (6) Kunal and Ashish
(c) John and Ashish (cf) Rohit and John
42. Other than Rohit and the boy good at all the subjects, who else stays far from
the school ?
(a) Rohit (6) Kunal (c) Ashish (d) John
KINDLY EXPLAIN THIS QUESTION IN DETAIL
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
DATA:
There are 4 boys (Rohit, Kunal, Ashish and John) who study four subjects: Hindi, Mathematics, Social Science and Science.
One of them is good at all the four subjects while another is weak in all of these.
Rohit is good at Mathematics only.
Kunal is weak in Mathematics only.
Neither of these two (Rohit and Kunal) nor Ashish studies in class VI.
CONCLUSION:
The one who is in class VI is John.
MORE DATA:
One who is good at all the subjects studies in class V.
38. Name the boy who is good at all the subjects.
CONCLUSION:
The one who is good at all the subjects is not John (because John is in class VI).
The one who is good at all the subjects is not Rohit (because Rohit is good at Mathematics only).
The one who is good at all the subjects is not Kunal (because Kunal is weak in Mathematics).
The boy who is good at all the subjects could only be Ashish.

The boy who is weak in all the subjects
is not Rohit (because Rohit is good at Mathematics),
is not Kunal (because Kunal is weak in Mathematics only).
is not Ashish (because Ashish is good at all the subjects).
39. The boy who is weak in all the subjects is John.

40. Which two boys are good at Hindi ?
NOT (a) Rohit and Kunal (because Rohit is good at Mathematics only),
NOT (c) Ashish and John (because John is weak in all the subjects),
NOT (d) John and Rohit (because John is weak in all the subjects).
The two boys who are good at Hindi must be (b) Kunal and Ashish.

41. Which two boys are good at Mathematics ?
NOT (a) Rohit and Ashish (because Rohit is good at Mathematics only),
NOT (c) John and Ashish (because John is weak in all the subjects),
NOT (d) Rohit and John (because John is weak in all the subjects)
The two boys who are good at Mathematics must be (b) Kunal and Ashish.

BACK FOR MORE DATA:
Kunal is weak in Mathematics only and stays close to the school.

42. Other than Rohit and the boy good at all the subjects, who else stays far from the school ?
NOT (a) Rohit,
NOT (B) Kunal (because Kunal stays close to the school),
NOT (c) Ashish (because Ashish is the boy good at all the subjects).
It must be (d) John.
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