<p>But I just can't solve...</p>
<p>1.I have only red, green and blue ties. All but two of my ties are red, all but two green and all but two are blue. How many ties do I have?
answer is 3....</p>
<ol>
<li>Jane can select one or more of the following 4 toppings for her icecream: cherries, nuts, caramel, and chocolate chips. If she selects one or more, how many different combinations of toppings are possible? (the order of the toppings doesn't matter)...</li>
</ol>
<ol>
<li>Points P, Q, R, and S lie on a line in that order. If segment PS is 1/2 of segment QS, and segment PS is 3 times segment RS (PS=3(RS)), what is the value of QS/PR?.....I put 3/5</li>
</ol>
<p>Doris I will help you solve it. It is VERY easy but it takes a little mental strain:
How to solve: If you know she has ALL red ties besides 2, and this applies to all of her ties then you can just think that since the remainder is 2 on all of her ties except for that 1 tie she has for EVERY tie then it must be out of a total of 3. (sorry im just rambling, you cant really solve it in math terms but more logical terms)
Hope I helped.</p>
<p>Pilot is right. #1 is much easier to solve logically:
All but two of my ties are red means there are two ties altogether of green and blue color, which makes it one of each.</p>
<p>"In math terms":
g + b = 2.
r + b = 2.
r + g = 2.</p>
<p>Thank you.......both of you.......I need to turn my brain a little...the sentences in the problems just make me feel awkward...</p>
<h1>2.</h1>
<p>If you don't like formulas (you can do without fine), just right all the combinations out. For ease of handling, label toppings 1, 2, 3, 4.
1 topping: 4 possibilities.
4 toppings: 1.
2 toppings:
12,
13
14
23
24
34 -- 6 altogether.
3 toppings - you can do yourself.</p>
<h1>3.</h1>
<p>PS > QS, so PS can't = (1/2) QS.
Am I missing something?</p>
<p>yeah---thats not possible</p>
<p>my fault........it should be half of PS is QS</p>
<p>P---------Q---R------S
.....1/2.......1/6...1/3....</p>
<p>I think that's how it looks like in a diagram.</p>
<p>QS/PR = (1/6 + 1/3) / (1/2 + 1/6) = 3/4</p>
<p>Yes its 3/4</p>