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 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.Find the odd number pair from the given alternatives**

(a) 1 : 8

(b) 27 : 64

(c) 125 : 218

(d) 343 : 512

**Q2.Arrange the following words as per order in the dictionary**

**1. Follicle**

**2. Folk**

**3. Follow**

**4. Foliage**

(a) 4, 2, 1, 3

(b) 3, 4, 2, 1

(c) 4, 3, 1, 2

(d) 2, 4, 3, 1

**Q3.A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.**

**8, 15, 28, 53, ?**

(a) 106

(b) 100

(c) 108

(d) 102

**Q4.A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.**

**WFB, TGD, QHG, ?**

(a) NIL

(b) NIK

(c) NLK

(d) NJL

**Q5.The average age of 19 boys in a class is 21 years. If the teacher’s age is included, the average increases to 22 years. What is the teacher’s age?**

(a) 39 years

(b) 41 years

(c) 40 years

(d) 44 years

**Q6.A man is 3 years older than his wife and four times as old as his son. If the son becomes 15 years old after 3 years. Then what is the present age of the wife?**

(a) 60 years

(b) 51 years

(c) 48 years

(d) 45 years

**Q7.From the given alternative words, select the word which cannot be formed using the letter of the given word: UNIVERSALISATION**

(a) NATION

(b) CURTAIN

(c) LIVER

(d) AVIATION

**Q8.If FRIEND is coded as HTKGPF then REVEAL will be coded as:**

(a) TGXFCN

(b) TGXNGC

(c) TXGNCG

(d) TGXGCN

**Q9.Which of the following interchange of signs would make the equation correct?**

**5 + 3 × 8 – 12 ÷ 4 = 3**

(a) – and ÷

(b) + and x

(c) + and ÷

(d) + and –

**Q10.Select the correct combination of mathematical signs to replace * signs and to balance the equation.**

**48 * 4 * 6 * 3 * 30**

(a) -,+, =, x

(b) ÷, =, x, +

(c) ÷, +, x, =

(d) -,=, x, +

**Solutions:**

S1.Ans.(c)

Sol. Except 125:218, all follow a pattern of x3: (x+1)3

S2.Ans.(a)

Sol. Order according to dictionary:

4. Foliage, 2. Folk , 1. Follicle , 3. Follow

S3.Ans.(d)

Sol. 8 × 2 – 1 = 15

15 × 2 – 2 = 28

28× 2 – 3 = 53

53 × 2 – 4 = 102

S5.Ans.(b)

Sol. Sum of age of 19 boys = 19 × 21 = 399

Let teacher’s age = x

(399 + x)/20 = 22

x = 41

Teacher’s age = 41 years

S6.Ans.(d)

Sol. Let son’s age = x

After 3 years, x+ 3 = 15

x = 12

Men’s age = 4x = 4 × 12 = 48

So, wife’s age = 48 – 3 = 45 years

S7.Ans.(b)

Sol. CURTAIN cannot be formed using the letter of UNIVERSALISATION, because it does not contain “C”.

S8.Ans.(d)

Same pattern follow in REVEAL.

S9.Ans.(a)

Sol. After interchange – and ÷:

=5 + 3 × 8 ÷ 12 – 4

=3

S10.Ans.(c)

Sol. By option(c)

48 * 4 * 6 * 3 * 30

48 ÷ 4 + 6 × 3 = 30

30 = 30