**General awareness and Aptitude test**

- COMPLETING A SERIES.

(a) Number Series.

Hints for answering the questions In these questions the series consists of numbers(digits). Number series are formed in many ways

1. Addition of figures given in row

2. Subtraction of figures from one another

3. Division of figures by one another

4. Multiplication of figures

5. Logical transportation of figures

6.Increase/decrease of numbers in a specific pattern**EXAMPLE**:

Write down the number which will complete the sequence and replace the ?

a. 6, 12, 18, 30, 48, ?

b. 3, 12, 48, 192, ?

c. 48, 24, 72, 36, 108, ?

d. 1, 4, 7, 10, 13, 16, 19, ?

e. 10, 15, 19, 22, 24, ?

f. 905, 576, 329, 247, ?

g. 1, 4, 9, 16, 25, ?

h. 1, 2, 8, 9, 15, 16, ?**ANSWERS:**

a. 78,each term is obtained after adding two to the previous number

b. 768, multiply each term by 4 to get the next number

c. 54, divide by 2 and multiply by 3 alternatively.

d. 22, constant difference of 3 in each subsequent number.

e. 25, decreasing difference of 5,4,3,2,1 between subsequent numbers

f. 82, interval between each pair of numbers becomes the succeeding term in series

g. each term is square of natural number

h. 22, interval is alternatively 1 and 6

**Multiple Choice Questions**

Find the missing number in the following series out of four options.

- 1, 2, 5, 7, 11,
**__**,17

a. 12 b. 13

c. 14 d. 15 - 1, 8, 27,
*__*,125

a. 37 b. 47

c. 54 d. 64 - 6, 12, 21, 33,
*__*

a. 38 b. 40

c. 45 d. 48 - 2, 20,
*__*,110, 182

a. 56 b. 72

c. 90 d. 96 - 81, 9, 64,
*__*,49, 7

a. 8 b. 9

c. 10 d. 11 - 15, 20, 30,
**_**,65

a. 35 b. 40

c. 45 d. 50 - 18, 30, 48, 72, 96,
**__**

a. 106 b. 115

c. 120 d. 96 - 12, 32, 72, 152,
,632*_*

a. 515 b. 613

c. 815 d. 312 - 1, 2, 3, 5, 7,
**__**,13

a. 8 b. 9

c. 10 d. 11 - 3, 8, 22, 63, 185,
**_**

a. 285 b. 295

c. 310 d. 500 - 4, 5, 7,
**_**, 19

a. 56 b. 66

c. 11 d. 17

- 27, 24, 30, 27, 33,
**__**

a. 48 b. 27

c. 30 d. 24 - 4, 10, 22, 46,
*_*

a. 56 b. 66

c. 76 d. 94 - 4, 1, -8,
,-20, 29, -32, 43*_*

a. 15 b. 16

c. 17 d. 18 - 2, -2, 7, 3, 17,
,32, 13*_*

a. 70 b. 10

c. 9 d. 8 - 9, 15, 23, 33,
*_*

a. 44 b. 36

c. 38 d. 45 - 12, 8, 14, 6,
,4*__*

a. 5 b. 21

c. 24 d. 16 - 16, 12, 64, 16,
**_**,20, 256

a. 18 b. 144

c. 20 d. 196 - 2, 6,
**_**,120, 720, 5040

a. 12 b. 18

c. 24 d. 60 - 9, 6, 16, 10, 30, 18,
*__*,34

a. 36 b. 60

c. 58 d. 60 - 10, 18, 34,
,130, 258*_*

a. 32 b. 60

c. 68 d. 66 - 30, 23, 17, 12,
,5*__*

a. 6 b. 7

c. 8 d. 9 - 285, 253, 221, 189,
*_*

a. 173 b. 167

c. 157 d. 146

- 8, 10, 14, 18,
,34, 50, 66*_*

a. 28 b. 27

c. 26 d. 25 - 29, 36, 44, 53,
*_*

a. 55 b. 63

c. 65 d. 69 - 10, 22, 27,
,44, 56, 61*_*

a. 32 b. 39

c. 40 d. 42 - 2, 10, 60, 420, 3360,
*_*

a. 30240 b. 27840

c. 25140 d. 222240 - 5, 8, 12, 17, 23,
,38*_*

a. 26 b. 28

c. 30 d. 29 - 4, 9, 20, 43, 90,
**__**

a. 180 b. 182

c. 179 d. 185 - 5, 9, 16, 29, 54, 103,
*__*

a. 102 b. 294

c. 203 d. 200**Key**

1 b – 11 c – 21 d

2 d – 12 c – 22 c

3 d – 13 d – 23 c

4 a – 14 a – 24 c

5 a – 15 d – 25 b

6 c – 16 d – 26 b

7 d – 17 d -27 a

8 d – 18 b – 28 c

9 c – 19 d – 29 d

10 d – 20 c – 30 d