Reasoning Questions: Data Sufficiency PART-1

1.Who among A, B, C, D and E is the highest? ?
I.B is heavier than A and D, and heavier than E
II.A is heavier than B and lighter than D
III.C is lighter than E
1.Only I
2.Both I and  II
3.Both I and III
4.Either I or III
5.All of these

Answer – 3.Both I and III
Explanation :
From I:
E<B<(A, D)
From III
C<E

2.How many children are there in the row of facing North?
I.Rani who is eighth from the left end is sixth to the left of Raja who is fourteenth from the right end
II.Rahul is fifth to the left of Neeli who is tenth from the right end and fifteenth from the left end
1.Only I
2.Only II
3.Both I and II
4.Either I or II
5.Neither I or II

Answer – 4.Either I or II
Explanation :
From I:
Total  = 8+20-1 = 24
From II:
10+15-1 =24

3.A, M, W, R and I are sitting in a row. If R is sitting between I and A, who is sitting in the middle(All are facing North )?
I.W always sitting at either of the extreme ends. Neither R nor M is an immediate neighbor of W
II.I am sitting to the right of M but on the left of R
1.Only I
2.Only II
3.Both I and II
4.Either I or II
5.Neither I or II

Answer – 5.Neither I or II
Explanation :
Two possibility rises
WAMIR
MIRAW


4.How is Rai related to Varun?
I.Sai is one of the brothers of Rai. Latha is the only sister of Rai
II.Varun is husband of Mala, who is mother of Sai
1.Only I
2.Only II
3.Both I and II
4.Either I or II
5.Neither I or II

Answer – 5.Neither I or II
Explanation :
Rai is either daughter or son of Varun.
5.How many students did secure First class in a class of 50 students?
I.Double the number of first class students secured second class and all the remaining students failed
II.Number of students failed was twice the number of first class students in the class
1.Only I
2.Only II
3.Both I and II
4.Either I or II
5.Neither I or II

Answer – 3.Both I and II
Explanation :
From I:
No of Students Failed = 48-3x
From II:
No of Students Failed = 3x
2x = 50-3x
5x=50
X = 10