Recently I was playing a game in Lumsoity called Fuse Clues. In this game, one has to complete many patterns. The way they have designed this game is that there are many houses in an apartment and in some of these houses electricity is not there which one needs to restore by completing the mathematical number series. The moment one completes the series correctly, the connection gets completed in the game turning on the bulb and lights in the house.

These mathematical series are very fun to solve and they help to improve logical reasoning by enhancing the ability to recognize patterns, draw conclusions, and thus make correct decisions. I decided to create a post in which one has to complete the mathematical series. One needs to have knowledge of only basic mathematics operations to complete these series. Let's see how many of these series can be completed without looking at the answers to these riddles. The difficulty of these math brain riddles is from medium to hard. So these can be used by high school students for testing their mathematical skills :). In each of these mathematical series, one has to tell what the next numbers on the series are with logical conclusions.
Answers to this series are given at the end of this post. Please post your answers in the comment section of this post.

Q1. 2, 20, 200,2000, 20,000, ............, ...................

Q2. 25, 49, 169, ...................., ......................, ............

Q3. 5, 13, 25, ................, ............., ...............

Q4. 53, 61, 68, 82, 92,..........., ....., ...........

Q5. 26, 682, 2166, 6152, ............., ............, ............

Q6. 10, 20, 74, 100, ......., ............

Q7. 2, 6, 12, 20, ....., .........., ............

Q8. 7, 16, 34, 70, ......, ................., ...............

Q9. 47, 51, 56, 60, .... ... ....., ......., ..............

Q10. 27, 64, 125, 216, ........., .........., .........

Q11. 12, 14, 116, 1136 ........, ...........,..............

Q12. 22, 44, 88, ............., ...............,............

Q13. 101, 1001, 10001, .............., ...................., ...............

Q14. 22, 24, 26, 28, .........,............., ...............

Q15. 34, 43, 54, 45, 36,............, 67, .............

These Fun Brain Teasers are part of Fun Maths Brain Teasers. To solve these Maths Riddles one requires good Mathematical knowledge as well as good analytics and logical reasoning. Do check below mentioned Fun Brain Teasers which will challenge your brain.

The Answers to Mathematical Series Riddles

A1. 2,00,000, 20,00,000, 2,00,00,000

A2. 256, 169, 256
The required number is the square of the sum of the digits of the previous number.

A3. 41, 61,85
Explanation: The series is as follows:
1²+2² , 2²+ 3² , 3² + 4², 4²+ 5², 5²+ 6², 6²+7²

A4. 103,107,115
The explanation of the math series is as follows:
The required number is the last number + the sum of the digits of the last number
e.g 53+8=61, 61+7=68, 68+14=82, 82 +10=92, 92+11=103, 103+4=107

A5. 2146, 6132, 2126
The explanation of the math series brain teaser is as follows:
The first and last digits of the required number are replacements of the first and last digits of the previous number and central numbers are the sum of the digits of the last number.

A6. 202, 244
The explanation of this math series brain teaser is as follows:
Required number = 1²+3² , 2²+ 4² , 5² + 7², 6²+ 8², 9²+ 11², 10²+12²

A7. 30, 42, 56
The explanation of the math series brain teaser is as follows:
5²+5. 6²+6, 7²+7

A8. 142, 286, 574
The explanation of this math series riddle is as follows:
The required number is the previous number x 2 +2

A9. 64, 68, 72...
The explanation of this math series riddle is as follows:
Required number = previous number + 4.

A10. 343, 512, 729
An explanation of this riddle is as follows:
Required number = cube of 7, 8, 9

A11. 11936, 1181936, 1164181936
An explanation of this math brain teaser is as follows:
Required number = each digit of the next number is the square of each digit of the previous number
Example: 14=1²2², 116=1² 4², 1136=1²1²6², and so on.

A12. 176, 352, 704
An explanation of this math series IQ question is as follows:
Required number = previous number x 2

A13. 100001, 1000001, 10000001
An explanation of this mathematical series is as follows:
Required number = add 900.9000, 90000, 900000, and so on in the previous number

A14. 30, 32, 34
The explanation of this mathematical series riddle is as follows: Required number =previous number +2.

A15. 63, 76.
The explanation of this math logic series is as follows: Required number = required number is the replacement of the digits of the previous number.