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- Question 1 of 12
##### 1. Question

Which of the following is the next number in the series given below

1, 3, 7, 11, 21, 39, 71, ?

CorrectIncorrect##### Hint

Sum of three terms gives you the next term in this series.

1+3+7 =11 + 7+3 = 21 and so on

- Question 2 of 12
##### 2. Question

12, 17, 67, 152, 182 , ?

CorrectIncorrect##### Hint

182 + 1^2 + 8^2+ 2^2 = 151

- Question 3 of 12
##### 3. Question

3, 13, 31, 57, 91, 133, ?

CorrectIncorrect##### Hint

1 x2 +1 = 3 ; 3 x 4 +1 = 13 ; 5x 6 +1 = 31 ; 7 x 8 +1 = 57 ; 9 x 10 + 1 = 91

Similarly the last number must be. 12 x 13 +1 = 157

- Question 4 of 12
##### 4. Question

11, 15, 24, 49, 98, 219, ?

CorrectIncorrect##### Hint

11 + 2^2 = 15 + 3^2 = 24 + 5^2 = 49 + 7^2 = 98 + 11^2 = 219 + 13^2 = 388

- Question 5 of 12
##### 5. Question

1, 2, 4, 10, 34, 154, ?

CorrectIncorrect##### Hint

1 + 1! = 2 + 2! = 4 + 3! = 10 + 4! = 34 +5! = 154 + 6! = 874

- Question 6 of 12
##### 6. Question

31, 62, 93, 25, 56, 87, ?

CorrectIncorrect##### Hint

The series is multiples of 13 written inverted.

13 is written as 31, 26 is written as 62, 39 is written as 93, 52 is written as 25 and so on.

- Question 7 of 12
##### 7. Question

1, 10000, 10, 1111 , 11, 1110, 100,1101 , 101,1100 , 110, 1011, ? ,

CorrectIncorrect##### Hint

There are two series – the alternate series starting from the first term is in binary – so this series contains decimal numbers 1,2,3 etc written in binary . The other series starts with the 2nd term and contains decimal numbers 16, 15, 14 etc written in base 3

- Question 8 of 12
##### 8. Question

0, 6, 24, 60, 120, 210 ?

CorrectIncorrect##### Hint

1^3 -1 = 0

2^3-2 = 6

3^3 -3 = 24 and so on the last term which has to be found shall be.

7^3-7 = 336

- Question 9 of 12
##### 9. Question

1, 2, 6, 21, 88, 445 ?

CorrectIncorrect##### Hint

1 x 1 +1 = 2. x 2 +2 = 6 x 3 +3 = 21 x4 +4 = 88 x 5 +5 = 445 x 6 +6 = 2676

- Question 10 of 12
##### 10. Question

2678, 672, 84, 32, ?

CorrectIncorrect##### Hint

2 x 6 x 7 x 8 = 672.

6 x 7 x 2 = 84

8 x 4 = 32 so the next number should be 3 x 2 =6

- Question 11 of 12
##### 11. Question

2160, 360, 72, 18, 6 ?

CorrectIncorrect##### Hint

This first number is divided by 6 to get the 2nd number. The 2nd number is divided by 5 to get the third number. This third number is divided by 4 to get the fourth number and so on. The last number must be divided by 2 to get the answer as 3

- Question 12 of 12
##### 12. Question

3, 30, 150, 500, 1250, 2500, ?

CorrectIncorrect##### Hint

This first number is divided by 0.1 to get 30, the second number is divided by 0.2 to get the next number – 150, the third number is divided by 0.3 to get the 500 and so on. The last number 2500 is divided by 0.6 to get 4166.67