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consecutives.

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by luiscarlos59 » Thu Mar 24, 2011 7:29 pm
I have been struggling with the "consecutive set/list" type of questions.

For example if a,b,c are consecutive and a>b>c. Do we need to imply that the consecutive list is for example 7,6,5 (the diff always 1?) or can we imply also that the list can be 7,5,3 (The diff 2)?

Because then we're asked C- A = 2 always true? yes or no. And it can be true if the set is 7,6,5 but not true if 7,5,3..

So how do we approach this problems?

Considering no extra information is stated in the problem.
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by Night reader » Thu Mar 24, 2011 7:36 pm
your query can be interpreted several ways - likewise -consecutive even/odd numbers, integers, etc.
if you run into sufficiency translations or just PS entry please post the exact question or questions which you are having trouble with ... I am sure the data you describe here is taken from some problem or question.

please post the exact question(s), otherwise you risk to get the wrong guidance based on many interpretations of your statements in this post.
luiscarlos59 wrote:I have been struggling with the "consecutive set/list" type of questions.

For example if a,b,c are consecutive and a>b>c. Do we need to imply that the consecutive list is for example 7,6,5 (the diff always 1?) or can we imply also that the list can be 7,5,3 (The diff 2)?

Because then we're asked C- A = 2 always true? yes or no. And it can be true if the set is 7,6,5 but not true if 7,5,3..

So how do we approach this problems?

Considering no extra information is stated in the problem.
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by srcc25anu » Thu Mar 24, 2011 7:50 pm
consecutive nos would be {1,2,3,4,5,6 ....

consecutive even nos would be {2,4,6,8,10 .....

consecutive odd nos would be {1,3,5,7,9,11,.....

consecutive multiples of any integer say 'x' will be {1x, 2x, 3x, 4x, 5x .....

and so on and so forth. depends what the question is looking for.
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by MAAJ » Fri Mar 25, 2011 5:19 am
For example if a, b, c are consecutive and a >b > c. Is c - a = 2 always true?

This means a, b and c are consecutive numbers and that "a" will have the highest value, and "c" the lowest. For example:

a > b > c

7 > 6 > 5
3 > 2 > 1
-5 > -6 > -7
-1 > -2 > -3

So (c - a) will always be -2 Because C is two units lower than A.

...And it can be true if the set is 7,6,5 but not true if 7,5,3..

Here 7, 5, 3 are not consecutive integers so we cannot say that C - A = -2
Assuming that A=7 C=5 and D=3 then C - A = -2 but this is not always the case.

Hope this helps!

luiscarlos59 wrote:I have been struggling with the "consecutive set/list" type of questions.

For example if a,b,c are consecutive and a>b>c. Do we need to imply that the consecutive list is for example 7,6,5 (the diff always 1?) or can we imply also that the list can be 7,5,3 (The diff 2)?

Because then we're asked C- A = 2 always true? yes or no. And it can be true if the set is 7,6,5 but not true if 7,5,3..

So how do we approach this problems?

Considering no extra information is stated in the problem.
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