<p>Meredith has a red hat, blue hat, and a white hat. She also has 3 sweaters - one red one blue and one white, 3 pairs of jeans - one red, one blue and one white, and 3 pairs of jeans - one red, one blue and one white. Meredith wants to wear a red, white and blue outfit consisting of one hat, one sweater and one pair of jeans. How many different possibilities does she have?</p>
<p>A)3
B)6
C)9
D)12
E)27</p>
<p>the answer is b)6.....
3c1X2c1X1c1=6..........this problem was answered yesterday,i guess</p>
<p>^Oh wow, thanks. I did 3c1+3c1+3c1, I keep making dumb mistakes!</p>
<p>no problemo....happy to help u</p>
<p>^by the way, 1C1, you mean 1 right?
Because 1C1 translates to 1!/(1-1)!1! which would be 1!/0!1!
and there can't be a 0!?..</p>
<p>0! is defined as 1.</p>
<p>PS -- red jeans?</p>
<p>PPS -- I don't remember ever having to use combinations and permutations on SAT math... lol I'd just draw a picture with arrows for this one. XD</p>
<p>^LOL, would pictures and arrows take forever? O.o
Yeah, combinations and permutations are on there occasionally - this one was actually taken from a real SAT.</p>
<p>Naw, it'd take like two seconds! See my edit.</p>
<p>^You're weird .<em>.
<</em><
Ok fine, 2 seconds.</p>
<p>Or you could just be like,</p>
<p>RWB.
RBW.</p>
<p>BWR.
BRW.</p>
<p>WRB.
WBR.</p>
<p>No need to spend all the effort getting to the combination function on your calculator three times. XD</p>
<p>I totally call Shiomi on the odd bit... nc1 = n. How many ways to choose 1 thing from n choices? n.</p>
<p>poseur , what happen if the choices are 6 kinds of Red, 6 kinds of blue,and 6 kinds of the other one.
are u gonna draw ?? ;)</p>
<p>I'd realize that for each starting color (6), there would be 5 x 4 x 3 x 2 options.</p>
<p>Without typing it into the calculator. </p>
<p>XD</p>
<p>Edit: Wait, I don't understand the question. I thought you meant, "What if there were six different colors and six different pieces of clothing?"</p>
<p>Did you mean, "What if there were six pieces of clothing, each in red, white, and blue... and she wanted a red, white, and blue outfit including each piece of clothing?"</p>
<p>Yeahhh, okay. In that case, combinations would be easier.</p>
<p>call me lame but uhh....</p>
<p>if it were 3 pieces of clothing with 6 colors each would you just do 6x5x4? 150?</p>
<p>-got it thanks</p>
<p>No there'll be 6c1x6c1x6c1 = 216</p>
<p>ohhh................right</p>
