if age is greater than 12 OR age is less than 62 then

No matter what value is in age, one condition or the other must be true. That means the whole expression must always be true. This statement likely meant to use AND.

I don't understand this

Question

if age is greater than 12 OR age is less than 62 then

No matter what value is in age, one condition or the other must be true. That means the whole expression must always be true.  This statement likely meant to use AND.

I don't understand this

kikuo · Answer

@Sachintha

rsmith6559 · Answer

You're right.

kikuo · Answer

@rsmith6559 

No, I mean I don't understand what they're saying haha.

geerky42 · Answer

Do you know the difference between OR and AND?

kikuo · Answer

Yes

geerky42 · Answer

"age is greater than 12 OR age is less than 62"  is always true because one of them must be true, right?

geerky42 · Answer

And therefore statement should be using AND to make it more meaningfulness.

geerky42 · Answer

Using AND operation, the age MUST be in between 12 and 62 for statement to be true, because if one of them is false, then the whole statement is false.

Does that make sense?

kikuo · Answer

@geerky42 

Not quite

sachintha · Answer

Do you the know what the AND gate does?

kikuo · Answer

Yes 
@Sachintha 

I just don't understand why AND should've been used instead of OR

sachintha · Answer

Age should be in between 12 and 62 for whole statement to be true. This means that both of the statements should be true because only one variable is considered here. It's useless to use OR for two conditions with the same variable.

geerky42 · Answer

In addition, OR is meaningless because then we could just use the Boolean value "True" instead.

rsmith6559 · Answer

And & or are the same in every day use as they are in programming.  For instance:

youUnderstand = ( ( myExplanationIsGoodEnough == True )
        and ( myExampleIsGoodEnough == True ) )

If I'm lucky, instead of both of those being required, either will do the trick, which would be an OR relationship.  To break down what's happening, myExplanationIsGoodEnough is evaluated, if compares to True as equal, the inside of that inner parenthesis evaluates to True.  The same is done for myExampleIsGoodEnough.

The outer parenthesis evaluates the results of the two inner parenthesis, so if both of them are True, the whole thing evaluates to True.

To oversimplify:

AND == ALL must be True
OR  == ANY must be True