what kind of question is this or equivalent to

[lathlee]

Hello,

I cannot remember which prep test I saw one of these two types in some logic Game but I remember seeing one of these types of questions.

1. What may be false?

Is this equivalent of Not Necessarily true . or could be true?

2. what may be true?

Is this equivalent of Could be True? or Not Necessarily True ?

[Kristina Moen]

Hi lath,

May Be False is equivalent to Not Necessarily True

May Be True is equivalent to Not Necessarily False

The words may, can, and could are interchangeable. You will usually see the word "could" in the logic games, as in "Which of the following could be true"?

[lathlee]

I am just making sure, then May be true is equivalent of could be true right. and they both mean 1-100%?

[Emily Haney-Caron]

Hi lathlee,

Yep, you got it!

[lathlee]

Hi. Sorry to ask this and cannot find the correct page reference,

In logical certainty wise : Could not be true = might not be true=unlikely true= not necessarily true=(0-99%)certainties right?

[Dave Killoran]

Hi Lathlee,

While could be true overlaps with Not Necessarily True, they are not identical. In fact, each include the opposite of the other! Numerically, we could say:

• Could Be True = 1%-100%
  
  Not Necessarily True = 0%-99%

Thus, Could Be True includes Must Be True (which is 100%, and the exact opposite of Not Necessarily True). And, Not Necessarily True includes Cannot Be True (0%), which is the exact opposite of Could be True.

So, between 1% and 99% they are identical and overlap, but at the extremes they differ considerably!

[lathlee]

Dear Dave or anyone else,

Thank you for the answer. I am sorry i did Not make myself clear.
I was asking for certainties regards to LOGICAL NEGATIVE version of could be, might be , and likely true.
I know
Could be NOT true is equivalent of cannot be true. My head just confused yesterday.
Now i thibk could be not true is equivalent of cannot be true.

I believe might not be true is same as cannot be true. O%
The reason i was confused yesterday and What i have been having problem is understanding of certainty of unlkely true is: i know likely true is as same as could be true which contain the possibility of 1-100%. Therefore, unlikely true, the logical opposite of likelt true should be
Certainty of zero, but sounds and feels like 0-99% expression.

[lathlee]

Hi. Please answer me when you have some time. Thx

[Francis O'Rourke]

Hi Lathlee,

The logical negation of 'could be true' would be 'cannot be true' or 'must be false'

The logical negation of 'likely to be true' would simply be 'unlikely to be true.' If something is unlikely to be true, then you can imagine that there is between a 0 and 49% possibility of the statement being true.

The phrase 'could be not true' is equivalent to 'not necessarily true' and 'could be false.' It is not equivalent to 'cannot be true.'

• Could be not true: 0- 99% possible
• Cannot be True: 0% possible

Similarly, 'might not be true' would indicate a 0 - 99% possibility of the statement being true.