Today's Puzzle

mitchell65 said:

There are three discs, Each on has a "7" on one side and an "8" on the other side. If thrown up radomly, how many combinations of numbers is possible. (Example "777" "888" etc)

If asked like this, then [Disk 1:7, Disk 2:7, Disk 3:8] is not the same combination than [Disk 1:7, Disk 2:8, Disk 3:7]. The answer is 8 combinations.

Kari said:

boohbah said:

i see your not from Truro kari (or helston! ) , nor me im Glaswegian.

I'm not sure if that's flattery or mockery, so no comments...

Don't worry Kari, I'm from Helston about 15 miles west of Boobah and I've got no idea what he talks about most of the time. A Glaswegian mixed with a bit of Cornish is a volatile subtance in my view!

Well you lost me in the first post.

Kari said:

mitchell65 said:

There are three discs, Each on has a "7" on one side and an "8" on the other side. If thrown up radomly, how many combinations of numbers is possible. (Example "777" "888" etc)

If asked like this, then [Disk 1:7, Disk 2:7, Disk 3:8] is not the same combination than [Disk 1:7, Disk 2:8, Disk 3:7]. The answer is 8 combinations.

But to get to your solution you need to add a new dimension which was not in the original puzzle!

mitchell65 said:

Don't worry Kari, I'm from Helston about 15 miles west of Boobah and I've got no idea what he talks about most of the time. A Glaswegian mixed with a bit of Cornish is a volatile subtance in my view!

Who does?
Next puzzle?

What's a puzzle?

A Guy

A Guy said:

What's a puzzle?

A Guy

A puzzle is a problem or enigma that tests the ingenuity of the solver. In a basic puzzle, one is intended to put together pieces in a logical way in order to come up with the desired solution. Puzzles are often contrived as a form of entertainment, but they can also stem from serious mathematical or logistical problems — in such cases, their successful resolution can be a significant contribution to mathematical research.

(Puzzle - Wikipedia, the free encyclopedia)

Kari

Kari said:

mitchell65 said:

There are three discs, Each on has a "7" on one side and an "8" on the other side. If thrown up radomly, how many combinations of numbers is possible. (Example "777" "888" etc)

If asked like this, then [Disk 1:7, Disk 2:7, Disk 3:8] is not the same combination than [Disk 1:7, Disk 2:8, Disk 3:7]. The answer is 8 combinations.

Kari is correct - in statistical theory combinations refers to permutations. Two different numbers on each of 3 disks is expressed as 2!3 (two factorial 3) which is 2 x 2 = 4 x 2 = 8.

The total number of combinations is 8.

Golden said:

The total number of combinations is 8.

Thank you :).

Total number of events = 4 as John expressed.
But the total number of outcomes are sample space of the experiment, which is 2 to the power 3 as Kari answered.

As the combinations of possible numbers is asked, Kari's answer is right. If the question is that how many sets of outcomes are possible (under which condition 778=787=877; all are two sevens and one eight), John's answer would be right.