**Directions (1 – 10): In these questions, a number series is given. Find out the missing number.**

**1. 6 15 48 171 ? 3645**

a) 716

b) 736

c) 746

d) 720

e) None of these

**2. 4 11 36 103 ? 939**

a) 345

b) 316

c) 375

d) 355

e) None of these

**3. 715 524 333 ? 119 68**

a) 224

b) 232

c) 242

d) 252

e) None of these

**4. 14, 78, 252, 620, ?, 2394**

a) 1340

b) 1290

c) 1470

d) 1860

e) None of these

**5. 8 18 51 208 1035 ?**

a) 6776

b) 6263

c) 6463

d) 6216

e) None of these

**6. 12 42 156 606 2400 ?**

a) 9186

b) 9470

c) 9570

d) 9486

e) None of these

**7. 14 26 62 122 206 ?**

a) 310

b) 312

c) 314

d) 313

e) None of these

**8. 6 8 16 42 122 ?**

a) 364

b) 366

c) 362

d) 361

e) None of these

**9. 61 49 57 41 45 ?**

a) 58

b) 32

c) 60

d) 25

e) None of these

**10. 5 6 14 45 ? 925**

a) 150

b) 155

c) 140

d) 184

e) None of these

**Solutions:**

**1. D)**(6 * 1) + (1 * 9) = 15

(15 * 2) + (2 * 9)= 48

(48 * 3) + (3 * 9)= 171

(171 * 4) + (4 * 9) = 720

(720 * 5) + (5 * 9) = 3645

**2. B)**4 * 3 – 1 = 11

11 * 3 + 3 = 36

36 * 3 – 5 = 103

103 * 3 + 7 = 316

316 * 3 – 9 = 939

**3. A)**9³ – 14 = 715

8³ + 12 = 524

7³ – 10 = 333……

**4. B)**2^4 – 2, 3^4 – 3, 4^4 – 4, 5^4 – 5…

**5. D)**8 * 2 + 2 = 18

18 * 3 – 3 = 51

51 * 4 + 4 = 208

208 * 5 – 5 = 1035….

**6. C)**(12 * 4) – 6 = 48 – 6 = 42

(42 * 4) – 12 = 168 – 12 = 156

(156 * 4) – 18 = 624 – 18 = 606

(606 * 4) – 24 = 2424 – 24 = 2400

(2400 * 4) – 54 = 9600 – 30 = 9570

**7. C)**14 + (1 * 12) = 14 + 12 = 26

26 + (3 * 12) = 26 + 36 = 62

62 + (5 * 12) = 62 + 60 = 122

122 + (7 * 12) = 122 + 84 = 206

206 + (9 * 12) = 206 + 108 = 314

**8. A)**6 + 2 = 8

8 + 8(= 3 * 2 + 2) = 16

16 + 26(= 3 * 8 + 2) = 42

42 + 80(= 3 * 26 + 2) = 122

122 + 242(= 3 * 80 + 2) = 364

**9. D)**

**10. D)**(5*1)+1 = 6

(6*2)+2 = 14

(14*3)+3 = 45

(45*4)+4 = 184