Entry #2

I scream, you scream, we all scream for symbols! During this week's lecture we learned many new symbols and quite a bit of information to remember too. I can understand the basic of most of the symbols but when asked to actually do symbol => English or English => symbol. That's a different story, so far looking at a few questions on the assignment it seems that it's going to give the practice i need for symbols => English and vice versa. After looking and attempting most of the assignment, the part that I had trouble with was question that are similar to #4.

4. Suppose T is a set of natural numbers. Consider the statement:
                      S2 : Every element of T is an integer power of 2.
Which of the following statements imply S2? Which of the following statements are implied by S2? Explain.

These kind of question's I don't really know how to answer so I guess I'll never to understand how to do them by the first test.

Entry #1

During tutorial's, I was confused of when to place a '?', 'O', or 'X' in the different parts of the Venn diagrams.  I understand what they meant but was not sure use them correctly. Ex. In one of the questions, I was not sure what the centre of the Venn diagram was suppose to represent so I didn't know if placing a '?' or 'O' in the centre would be correct.

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A: Hey! I haven't seen you since grade 9. How many kids do you have?
B: I have 3 kids and the sum of their ages (rounded down to nearest year) is 28.
A: That doesn't really answer my question.
B: Well, I recently had a one of the kids and - *SOMEONE COUGHS BEHIND YOU*
A: That still doesn't tell me how old they are.
B: Well, the oldest isn't older than the last time I saw you.
A: Okay, I see: their ages are - *your boss calls you*

1.
Sum of their ages is 28
Recently had a kid
Oldest isn't older than the last time he saw you