SOLUTION: Hi, I couldn't figure out how to solve this problem. I tried 7! divided by 6! and the answer is 7, 6! cancels out the first 6 numbers of 7!. But the correct answer is 9. Please hel

Question 852576: Hi, I couldn't figure out how to solve this problem. I tried 7! divided by 6! and the answer is 7, 6! cancels out the first 6 numbers of 7!. But the correct answer is 9. Please help.
Thanks a lot,
shayne
Mr. Lee bought 6 new pants and 7 new
shirts. Now he needs to buy new ties.
Mr. Lee wants to be able to wear a
different combination of one pant, one
shirt, and one tie every day for one
year. What is the minimum number of
ties he should buy?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Why are you using 7!, 6! and dividing them? Ask yourself that first. The correct solution involves no factorials.

If Mr. Lee buys t ties, the number of pants-shirt-tie combinations is 6*7*t = 42t. We want 42t >= 365, and the smallest integer t such that the inequality is true is t = 9.
RELATED QUESTIONS
I can do some of this problem, except for the very last part. Solve: 3e^4x+7=9. I get (answered by nerdybill)

Hi, earlier I posted my math problem but I couldn�t figure out how to upload the image so (answered by greenestamps)

The directions for the problem is "Solve each equation for x to three significant digits� (answered by fractalier)

I have this problem and I want to know if I did it correct? 4-x/x-2=-2/x-2, this is how I (answered by jim_thompson5910)

7x-6y=-12 6x+7y=99 The directions are solve by the elimination method. I have tried by (answered by KMST)

Hi, I'm studying for a test and the problem below seems so simple, but I can't figure... (answered by scott8148)

What is the answer to this problem? 5/7 divided by... (answered by rfer)

Please help me solve this equation. 1/2 x + 1/3 x = 7 This is what I had tried,... (answered by jakegfan,MelanieBCC)

What is 9/7 + (-2 3/14)? I tried to work it out and I got -2 6/5. Then, I thought the... (answered by checkley71)