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# Reasoning Questions For DSSSB Exam 2017

Q1. If ‘sand’ is called ‘air’, ‘air’ is called ‘Mars’, ‘Mars’ is called ‘Well’, ‘well’ is called ‘Island’, ‘Island’ is called ‘Sky’, then from where will a man draws water?
(a) Well
(b) Island
(c) Sky
(d) Mars

Q2. If A interchanges position with B, similarly C and D interchange positions and so as E and F and so on upto Y and Z, then which of the following will be seventh from the left?
(a) G
(b) F
(c) I
(d) None of these

Directions (3-5): Study the sets of numbers given below and answer the question, which follow:
489 541 654 953 783
Q3. If in each number the first and the second digits are interchanged, which will be the third highest number?
(a) 489
(b) 541
(c) 654
(d) 953

Q4. If in each number, the first and the last digits are interchanged, which of the following will be the second highest number?
(a) 489
(b) 541
(c) 654
(d) 953

Q5. If one is added to each of the numbers, then which of the following numbers will be the difference between the second digit of second highest number and the second digit of the highest number?
(a) Zero
(b) 3
(c) 1
(d) 4

Q6. In this question, choose that set of numbers from the four alternative sets, that is similar to the given set: (63, 49, 35)
(a) (72, 40, 24)
(b) (72, 48, 24)
(c) (64, 40, 28)
(d) (81,63, 45)

Q7. In this number series, one term is missing, which has been given as one of the four alternatives under it. This alternative is your answer.
6, 12, 21, ? , 48
(a) 33
(b) 22
(c) 44
(d) 31

Q8. Find the odd letters from the given alternatives.
(a) NSWX
(b) KPSU
(c) HMQR
(d) EJNO

Q9. Arrange the following words as per order in the dictionary
1. Maternity
2. Matriarchy
3. Matchbox
4. Matricide
(a) 3,1,2,4
(b) 4,3,1,2
(c) 3,4,1,2
(d) 1,3,4,2

Q10. Find the odd number pair from the given alternatives?
(a) (3 , 12)
(b) (2 , 6)
(c) (6 , 42)
(d) (5 , 35)
Solutions:
S1.Ans.(b)
Sol. Man draws water from well, but ‘well’ is called ‘island’. So man draws water from island.
S2.Ans.(d)
Sol. Clearly, the seventh letter from the left is H.
S3.Ans.(d)
Sol.
489 -> 849;
541 -> 451
654 -> 564;
953 -> 593
783 -> 873
Third highest number = 593 -> 953
S4.Ans.(c)
Sol.
489 -> 984;
541 -> 145
654 -> 456;
953 -> 359
783 -> 387
Second highest number = 456 => 654
S5.Ans.(b)
Sol.
489 + 1 = 490;
541 + 1 = 542
654 + 1 = 655;
953 + 1 = 954
783 + 1 = 784
Difference = 8 – 5 = 3
S6.Ans.(d)
Sol. Each set consists of numbers which are obtained by multiplying a certain number by 9, 7 and 5 respectively.
Thus, in the given set, 63 = 7 × 9. 49 = 7 × 7 , 35 = 7 × 5.
Similarly, 81 = 9 × 9, 63 = 9 x 7, 45 = 9 x 5.
S7.Ans.(a)
Sol. Pattern is +6, +9, +12, +15, ….
Missing term is = 21+15=33
S8. Ans.(b)
Sol. Except KPSU, all follow a sequence of +5, +4, +1
S9. Ans.(a)
Sol. Order according to dictionary:
3. Matchbox , 1. Maternity , 2. Matriarchy, 4. Matricide
S10. Ans.(d)
Sol. Except (5 , 35) , in all pairs (x, x × (x + 1))