## Number Series

#### Number Series

Direction: What should come in place of question mark (?) in the following number series?

1. 12, 15, 19, 24, ?
1. 28
2. 27
3. 30
4. 32
5. 34

1. The difference between the numbers increases by 1.

##### Correct Option: C

The difference between the numbers increases by 1.

1. 72, 63, 54, 45, ...?......
1. 36
2. 81
3. 27
4. 90
5. 18

1. The gap is of -9

##### Correct Option: A

The gap is of -9

1. 8, 64, 216, 516, 512, 1000, 1728, ?
1. 4096
2. 2744
3. 3375
4. 2197
5. 4913

1. Series is 23 , 43 , 63 , 83 , 103 , 123 , ....
Then, ? = 143 = 2744

##### Correct Option: B

Series is 23 , 43 , 63 , 83 , 103 , 123 , ....
Then, ? = 143 = 2744

1. 81, 512, 2401, 7776, 15625, 16384, ?
1. 2187
2. 19683
3. 729
4. 512
5. 6561

1. Option (e) Series is 92 , 83 , 74 , 65 , 56 , 47 , 38
? = 38 , = 6561

##### Correct Option: E

Option (e) Series is 92 , 83 , 74 , 65 , 56 , 47 , 38
? = 38 , = 6561

1. 6, 26, 134, 666, 3334, 16666, ?
1. 84344
2. 83443
3. 84434
4. 83334
5. 83344

1. 6 x 5 -4 = 26
26 x 5 + 4 =134
134 x 5 - 4 =666
666 x 5 + 4 = 3334
3334 x 5 -4 = 16666
16666 x 5 + 4 = ?
? = 83334

##### Correct Option: D

6 x 5 -4 = 26
26 x 5 + 4 =134
134 x 5 - 4 =666
666 x 5 + 4 = 3334
3334 x 5 -4 = 16666
16666 x 5 + 4 = ?
? = 83334