```
```1) 17, 18, 20, 23, 27, 32,______

a) 40

b) 39

c) 38

d) 37

**Answer:**c)38

**Explanation:**The difference between the terms increasing like

17+1=18,18+2=20,20+3=23…

hence it is 32+6=38.

```
```2) 1, 1, 1, 2, 3, 5, 7, 10,______

a) 12

b) 14

c) 15

d) 13

**Answer:**d) 13

**Explanation:**Here the difference between the number 0, 0, 1, 1, 2, 2, 3, 3. So the answer is 13.

```
```3)11, 13, 17, 19, 23, 29,______

a) 33

b) 32

c) 31

d) 34

**Answer:**c)31

**Explanation:**The terms are consecutive primes,

so the next term of 29 is 31.

```
```4. 8, 10, 13, 18, 25, 36,______

a) 48

b) 49

c) 50

d)51

**Answer:**b)49

**Explanation:**The difference between terms are arranged by adding prime number like

8+2=10,10+3=13,13+5=18,18+7=25…

so last number 36+13=49.

```
```5. 32.9, 32.7, 32.4, 32, 31.5,______

a) 30.5

b) 30.8

c) 30.4

d) 30.9

**Answer:**d)30.9

**Explanation:**The difference between terms decreasing by 0.2, 0.3, 0.4, 0.5, 0.6

such that 32.9-0.2=32.7, 32.7-0.3=32.4….

so 31.5-0.6=30.9.

```
```6. 21, 26, 36, 41, 51, 56,______

a) 61

b) 66

c) 76

d) 70

**Answer:**b)66

**Explanation:**The terms are arranged by adding 5,10 secuancially

i.e 21+5=26,26+10=36…

so last term 56+10=66.

```
```7. 5, 8, 10, 11, 14, 10, 17, 20,______

a) 22

b) 23

c) 13

d) 10

**Answer:**d) 10

**Explanation:**Here difference between 5 and 8 is "3".Then next term is 10.Then difference between 11 and 14 is then term is "3", and next term is 10.So in this order the answer is 10.

```
```8. 95, 85, 76, 68, 61, 55,______

a) 48

b) 49

c) 50

d) 51

**Answer:**c)50

**Explanation:**The difference between the terms are decreasing by 10,9,8,7,6,5…

like 95-10=85,85-9=76..

so last term 55-5=50.

```
```9. 21, 22, 26, 35, 51,______

a) 76

b) 77

c) 58

d) 82

**Answer:**a)76

**Explanation:**The difference between the terms are arranged by 12,22,32,42....

so 21+1=22,22+4=26…last term 51+25=76.

```
```10. 12.3, 12.4, 12.6, 12.9, 13.3, 13.8, ______

a) 14.6

b) 14.4

c) 14.7

d) 14.5

**Answer:**b)14.4

**Explanation:**The difference between the consecutive terms are arranged by adding 0.1,0.2,0.3,0.4…

so 12.3+0.1=12.4,12.4+0.2=12.6…

so the last term is 13.8+0.6=14.4