Maths Brain Teasers 64:: Can You - Eliminate the Odd Clock Out???

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Hey All; @StemGeeks Mathematician;

Without further, ado, let's get to our puzzle for today:: Maths Brain Teasers 64:: Can You Complete The Sequence???


Have a close look at the image given and see if you eliminate the - "Odd Clock Out".. There is logic to resolve the puzzle; try finding out the logic and it should be resolved in seconds.. Guesswork isn't going to help...

With that, I'll leave you all with the Maths Brain Teasers 64:: Can You - Eliminate the Odd Clock Out? Good luck solving iT...

Maths Brain Teasers 63:: Can You Complete The Sequence? - Solved with Explanation


Let's have a look at the Step by Step instructions to Solve the Maths Brain Teasers 63:: Can You Complete The Sequence??

  • First, let's look at the pattern involved in this puzzle::

The Numbers are added in the following order::

1.25, 1.5, 1.75, 2, 2.25, 2.5

And as indicated by @universe.laws the same can be solved in the following manner as well;;

Looking at the pattern, we see that each time we subtract 2 consecutive numbers (going from the smallest to largest) the difference increase by 0.25

x - 9.75 = 2.5

We solve for x and get: x = 2.5 + 9.75 = 12.25

Hence the Answer to the Maths Brain Teasers 63 is :: 12.25

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I'll be again doing a giveaway of STEM tokens to the lucky random winner with the correct answer. For the last contest, which was Maths Brain Teasers 63:: Can You Complete The Sequence?.

We had 6 entries and I happy to see the engagement by everyone. At the same time, it's great to see the detailed answers provided by everyone as to how they arrived at the solution of the puzzle.. Well done guys.. Way to GO... Now the results part; I'm going to use a random picker tool to select a Winner. And the Winner is....


Congratulations @universe.laws; You WIN yourself 10 STEM tokens. You should be having the rewards in your STEM Wallet Soon.

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Here is the motivation to solve the Maths Equation Puzzle?


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My guess will be that Clock B is the odd one out.

The Pattern I found for was if a clock was AB:CD then the corresponding pattern clock is BA:DC.

So 12:11 --> 21:11 and 11:15 --> 11:51. These four numbers are on the available solutions.
However 11:21 would require 11:12 to be on the list and it isn't.

B is the odd clock.
Looking at the pattern it is evident that we are switching (or mirroring) the digits representing the hour, and those representing the minute independently.
A is 12:11 the numbers representing the hour become 21 and those for the minutes 11 (since we have the same digits) so we get its counter clock which is E) 21:11
Same for C which is 11:15 after mirroring it becomes 11:51 which is clock D
And we are left with B) 11:21 which is the odd clock since an equivalent one would be 11:12 which is not part of the 5 clocks.

The answer is B because the pattern here is switching the digits of the clocks.
Clock A is 12:11 has its counterpart clock E 21:11
And clock C 11:15 has clock D 11:51
But clock B 11:21 has no equivalent counterpart, which would have to be 11:12

Definitely Clock B, the digits for the hours and minutes are swapped around for the other two pairs, with poor old clock B without a pair.

I also say that the answer is B.

Clocks A & D, and clocks C & E are mirror images of one another. Clock B has no counterpart.


Comment 79/500

I thought it was swapping digits at first too, but then I saw the mirror...I think I'm the only one who's correct in my reasoning. 🤔🤓

Comment 80/500

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I think the answer is 11:21. It is the only one which doesn't have an inverse of the minute digits.

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