Math and Logic Puzzles

December 5, 2013 24 Comments

Filed under Joke, Logic Puzzles, Math Tagged with brainteaser, fun, IQ, logic, puzzle, recreational mathematics, test

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What is the answer? i want to say 12, of course probably wrong since I do not even understand the question.

This is an example of thinking outside the box. The problem is not about arithmetics.

what is the answer supposed to be then? would love to know thanks.

I’ll send you the answer and keep the secret for others.

Were the 99.9% who failed native English speakers?

Yes, they are

3

Not Yet.

Scumbag! You don’t know the answer!

I know. A similar problem was posted at http://www.aplusclick.com in Logic section.

I’d say that 5 -> 4 and the next step would be 4 -> 4

Good for you!

I’ll go with 9. If the number is even, halve it; if it is odd, double and subtract 1.

Tim did better.

If you chose 12 as answer then the pattern becomes a simple permutation.

name: 12=A; 6=B; 3=C; 5=D. draw a square with vertices A, B, C, D So, we have: A –> B B –> C C –> D It follows: D –> A, it represents one rotation in the Dihedral group of order4

Mayans in the Dresden Codex recorded encoded two harder base 13 series to solve

row two: 11 13 11 1 8 6 4 7 7 13 6 1 3 sums to 91

row three: 11 13 11 10 5 11 2 4 4 10 3 1 6 sums to 91

clue: rows 1 and 4 used (1 2 3 4 5 6 7 8 9 10 11 12 13) x 9 =

9 5 1 10 6 2 11 7 3 12 8 4 13 sums to 91

with 1 x 9 = 9, 2 x 9 = 18 – 13 = 5, 3 x 9 = 27 – 26 = 1, and so forth

any hints? love to break the lines 2 and 3 1200 AD codes.

Milo Gardner

There are not enough numbers in the pattern to establish an absolute answer, however one can come up with a number of possibilities.

5 -> 2

noon + 5 hrs + 1 hr (total = 6 hrs) = 6:00 6:00 + 6 hrs (previous total) + 3 hrs (new total = 9 hrs) = 3:00 3:00 + 9 hrs + 5 hrs (or 3 hrs + 2 hrs) (total now = 14 hrs) = 5:00 5:00 + 14 hrs + 7 hrs (or 5 hrs = 2 hrs) (total now = 21 hrs) = 2:00 2:00 + 21 hrs + 9 hrs (total now = 30 hours) = 6:00

working backwards from step 1: noon – 5 hrs = 7:00, but the relationship breaks down in reverse

Ugh… or “five” has four!

I liked it better as a clock problem… (I liked the cumulative addition of the incremental odd number…)

In my country 12>4 6>4 3>4 5>5 4>6

7

4 is the answer 10 would be 3

I Like this one.

12

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What is the answer? i want to say 12, of course probably wrong since I do not even understand the question.

This is an example of thinking outside the box.

The problem is not about arithmetics.

what is the answer supposed to be then? would love to know thanks.

I’ll send you the answer and keep the secret for others.

Were the 99.9% who failed native English speakers?

Yes, they are

3

Not Yet.

Scumbag! You don’t know the answer!

I know. A similar problem was posted at http://www.aplusclick.com in Logic section.

I’d say that 5 -> 4

and the next step would be 4 -> 4

Good for you!

I’ll go with 9. If the number is even, halve it; if it is odd, double and subtract 1.

Tim did better.

If you chose 12 as answer then the pattern becomes a simple permutation.

name: 12=A; 6=B; 3=C; 5=D.

draw a square with vertices A, B, C, D

So, we have:

A –> B

B –> C

C –> D

It follows: D –> A, it represents one rotation in the Dihedral group of order4

Mayans in the Dresden Codex recorded encoded two harder base 13 series to solve

row two: 11 13 11 1 8 6 4 7 7 13 6 1 3 sums to 91

row three: 11 13 11 10 5 11 2 4 4 10 3 1 6 sums to 91

clue: rows 1 and 4 used (1 2 3 4 5 6 7 8 9 10 11 12 13) x 9 =

9 5 1 10 6 2 11 7 3 12 8 4 13 sums to 91

with 1 x 9 = 9, 2 x 9 = 18 – 13 = 5, 3 x 9 = 27 – 26 = 1, and so forth

any hints? love to break the lines 2 and 3 1200 AD codes.

Milo Gardner

There are not enough numbers in the pattern to establish an absolute answer, however one can come up with a number of possibilities.

5 -> 2

noon + 5 hrs + 1 hr (total = 6 hrs) = 6:00

6:00 + 6 hrs (previous total) + 3 hrs (new total = 9 hrs) = 3:00

3:00 + 9 hrs + 5 hrs (or 3 hrs + 2 hrs) (total now = 14 hrs) = 5:00

5:00 + 14 hrs + 7 hrs (or 5 hrs = 2 hrs) (total now = 21 hrs) = 2:00

2:00 + 21 hrs + 9 hrs (total now = 30 hours) = 6:00

working backwards from step 1:

noon – 5 hrs = 7:00, but the relationship breaks down in reverse

Ugh… or “five” has four!

I liked it better as a clock problem… (I liked the cumulative addition of the incremental odd number…)

In my country 12>4 6>4 3>4 5>5 4>6

7

4 is the answer

10 would be 3

I Like this one.

12