# Thread: Domino Effect 2

1. ## Domino Effect 2

Each line of dominoes, labelled a to e, left to right, contains an odd-one-out. In each case, which one is it and why?

2. ## Re: Domino Effect 2

Okay, let's try #1: <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>Each of the dominoes has in it's bottom half, a line segment with a small circle at it's mid-point. In the top halves of the dominoes, there is a line segment with a small circle at it's end-point, except for the first domino. The small circle is at the first end of the line segment. Thus, my answer is a.</font color=yellow></span hi>

3. ## Re: Domino Effect 2

And for #3: <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>Each domino has a multi-sided shape in both it's top and bottom halves. Each domino also has an equal number of line segments, randomly placed, in it's top and bottom halves. Except for the domino in the 4th position (d), it has one line segment in the top half and two line segments in the bottom half.</font color=yellow></span hi>

4. ## Re: Domino Effect 2

A shot at #4: <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>Seems to me that the arrangement of marks in the top half of the dominoes suggests a two-digit number and that the bottom half is simply representative of a single-digit number, 2 or 3, depending on the number of marks. So, I think the dominoes are just numbers: 41 & 2 31 / 3 53 & 3 42 & 3 and 23 & 2.

The fourth domino (d), 42 & 3 is the only domino that doesn't consists entirely of prime numbers.</font color=yellow></span hi>

5. ## Re: Domino Effect 2

1# Incorrect.
3# Correct but for a different reason.
4# Correct.

6. ## Re: Domino Effect 2

<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>1 c. The lines in the top half are being rotated 45 degrees to the right; therefore, in 1 c the circle should be on the top left instead odf the bottom left</font color=yellow></span hi>

7. ## Re: Domino Effect 2

Not quite, Tom. In this sequence there are two pairs of dominoes that obey the same rule whilst one does not.

8. ## Re: Domino Effect 2

Rob:

1 - <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>The first domino (a) should have both the red circles on the other side of the blue lines, then for each rotation, the top circle changes sides and the bottom circle stays on the same side.</font color=yellow></span hi>

Tony.

9. ## Re: Domino Effect 2

The answer to 1# is (a).
([img]/forums/images/smilies/cool.gif[/img] transforms to (d) by rotating 90 degrees clockwise.
Similarly © transforms to (e).

10. ## Re: Domino Effect 2

Then under similar circumstances, the solution to Q2 is: <span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>E - as A becomes C by inverting the top and bottom halves and exchanging the colored object. Same for B and D. That makes "E" the odd-one-out.</font color=yellow></span hi>

11. ## Re: Domino Effect 2

My mistake. (a) is correct for the reason given to Tony.
This leaves 2# unanswered. Again, there are two pairs that undergo the same transformation leaving the odd one out, which, in this case, is (e).
Perhaps not as good a puzzle as I first thought.

12. ## Re: Domino Effect 2

3#<span style="background-color: #FFFF00; color: #000000; font-weight: bold"><font color=yellow>This is a little trickier because of a number of red herrings. This time colour, size and angle don't matter. The two similar pairs are a/e and b/c leaving {d} the odd one out. With the similar pairs, the lines change places from outside the object to intersecting the object.</font color=yellow></span hi>

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