## Number Series

#### Number Series

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

1. 499, 622, 868, 1237, 1729, 2344, ?
1. 3205
2. 3082
3. 2959
4. 3462
5. 2876

1. The series is + 123, + (123 x 2), +(123 x 3), + (123 x 4), ...

##### Correct Option: B

The series is + 123, + (123 x 2), +(123 x 3), + (123 x 4), ...

1. 8, 31, 122, 485, 1936, 7739, ?
1. 30950
2. 46430
3. 34650
4. 42850
5. 38540

1. The series is x 4 -1, x 4 - 2, x 4 - 3, x 4 - 4, ....,

##### Correct Option: A

The series is x 4 -1, x 4 - 2, x 4 - 3, x 4 - 4, ....,

1. 274, 301, 426, 769, 1498, 2824, 5026
1. 301
2. 426
3. 769
4. 2824
5. None of these

1. The series is ;
+ 33, + 53, + 73, + 93, + 113, + 133, ............

##### Correct Option: D

The series is ;
+ 33, + 53, + 73, + 93, + 113, + 133, ............

1. 14, 22, 34.5, 55.5, 87.25, 135.875, 209.125
1. 55.5
2. 34.5
3. 135.875
4. 87.25
5. None of these

1. None of these

##### Correct Option: E

None of these

Direction: In each of these questions a number series is given. Only one number is wrong in each series. You have to find out the wrong number.

1. 10 ,15 , 24 , 35 , 54 ,75 ,100
1. 35
2. 75
3. 24
4. 15
5. 54

1. The given series is in the below pattern,
First term = 10
Second term = First term + 5 = 15
Third term = Second term + 9 = 24
Similarly , we can calculate all others terms also.

##### Correct Option: A

The given series is in the below pattern,
First term = 10
Second term = First term + 5 = 15
Second term = 10 + 5 =15 ,
Third term = Second term + 9 = 24
Third term = 15 + 9 = 24 ,
Similarly , we can find the all others terms also.
24 + 13 = 35, is wrong. It should be 37.
Fourth term = Third term + 13 = 37 + 17 = 54 ,
Fifth term = Fourth term + 17 = 54 + 21 = 75 ,
Sixth term = Fifth term + 21 = 75 + 25 = 100
The difference in successive nos. 9 – 5 = 13 – 9 = 17 – 13 = 21 - 17 = 4.
Hence, 35 is wrong. It should be 37.