The reasoning is the most scoring section in any competitive exam. It also develops or nourishes our critical thinking skills as compared to other subjects. In DSSSB, KVS, NVS Exam, as a student to score well in this part, you have to start your preparation now because there is negative marking as well. The more you have prepared, the better you score.
Q1. In a certain code, DOWNBEAT is written as TABEWNDO. How will the word PROSPECT be written in that code?
(a) TCEPSORP
(b) TCPEOSPR
(c) TCPESOPR
(d) TCPEOSRP
Q2. If SENSATIONAL can be written as 1 2 3 1 4 5 6 7 3 4 8, how will STATION be written in that code?
(a) 1455673
(b) 1545763
(c) 1554673
(d) 1545673
Q3.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
Q4. If 5 + 7 = 21 and 9 + 4 = 31. What is 7 + 9?
(a) 41
(b) 51
(c) 61
(d) 71
Q5. If 532 + 781 = 21 and 862 + 910 = 21, then what is the value of 796 + 355 = ?
(a) 21
(b) 30
(c) 31
(d) 22
Q6. If ‘–‘ stands for ‘÷’ ; ‘+’ stands for ‘×’ ; ‘÷’ stands for ‘_’ and ‘×’ stands for ‘+’ , which one of the following is correct?
(a) 10 + 5 – 5 ÷ 5 × 5 = 25
(b) 10 – 5 + 5 ÷ 5 × 5 = 10
(c) 10 × 5 ÷ 5 + 5 – 5 = 16
(d) 10 ÷ 5 × 5 ÷ 5 = 50
Q7. If the word DIPLOMAT is written as FKRNQOCV, then AMBASSDOR can be written as
(a) COECMMFQS
(b) CODCUUFQT
(c) COCBOOFQS
(d) COADQQFRS
Directions (8-9) : In each of the following questions, select the missing number from the given responses.
Q8.
3 5 8
5 7 6
4 2 ?
60 70 144
(a) 18
(b) 48
(c) 3
(d) 4
Q9.
6 18 9
12 36 18
24 ? 36
(a) 18
(b) 72
(c) 54
(d) 60
Q10. Prem, Rakesh, Roshan, Sanjay, Tanuj, Udit are sitting at equal distances in a circle and are facing the center. Roshan is third from Prem in the right. Rakesh is third from Tanuj from the left. Udit is between Prem and Tanuj and Sanjay is third from Udit in the left and right. Who is opposite Tanuj?
(a) Roshan
(b) Prem
(c) Rakesh
(d) Sanjay
Solutions
S1. Ans.(b)
Sol.
1 2 3 4 5 6 7 8
D O W N T O W N
It has been coded as :
8 7 5 6 3 4 1 2
T A B E W N D O
Therefore,
1 2 3 4 5 6 7 8
P R O S P E C T
Its code would be
8 7 5 6 3 4 1 2
T C P E O S P R
S2. Ans.(d)
Sol.
S E N S A T I O N A L
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
1 2 3 1 4 5 6 7 3 4 8
Therefore,
S T A T I O N
↓ ↓ ↓ ↓ ↓ ↓ ↓
1 5 4 5 6 7 3
S3. Ans.(c)
Sol.
489 -> 984;
541 -> 145
654 -> 456;
953 -> 359
783 -> 387
Second highest number = 456 => 654
S4. Ans.(c)
Sol.
5 + 7 = 12 ⇒ 21
9+4=13⇒31
7+9=16⇒61
S5. Ans.(b)
Sol.
832 + 781 = 21
⇒ 5 + 3 + 2 + 7 + 8 + 1 = 26
26 – 5 = 21
862 + 910 = 21
⇒ 8 + 6 + 2 + 9 + 1 + 0 = 26
26 – 5 = 21
796 + 355 = ?
⇒7 + 9 + 6 + 3 + 5 + 5 = 35
35 – 5 = 30
S6. Ans.(b)
Sol.
–⇒÷ +⇒×
÷⇒– ×⇒+
Option (2)
10 – 5 + 5 ÷ 5 ×5 = 10
⇒10 ÷ 5 × 5– 5 + 5 = 10
⇒2 × 5 – 5+ 5 = 10
⇒10
S8. Ans.(c)
Sol.
First column
3 × 5 × 4 = 60
Second column
5 × 7 × 2 = 70
Third column
8 × 6 × ? = 144
⇒ ? = 144/48=▭3
S9. Ans.(b)
Sol.
First column
6 × 2 = 12
12 × 2 = 24
Second column
18 × 2 = 36
36 × 2 = 72
Third column
9 × 2 = 18
18 × 2 = 36
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