The first letter can be any one of 5. For each of those . . . The second letter can be any one of the remaining 4. For each of those . . . The third letter can be any one of the remaining 3. For each of those . . . The fourth letter can be any one of the remaining 2. For either of those . . . The fifth letter is the last remaining one.
Total number of possibilities = (5 x 4 x 3 x 2 x 1) =
<em> 120 ways</em> to line them up.
Now, may I say that being a hater of school is not something that makes you cool. Maybe it does make you one of the crowd, but life is not a war between you and school. School is simply something that a lot of grown-ups spend a lot of money on, and a lot of teachers spend their whole life on, to make sure that a lot of kids won't go through <em><u>their</u></em> whole life stupid. You can learn everything you ever want to know there, and it's all free. That's a pretty good deal.
A= 3400t + 600 | given formula 21000= 3400t + 600 | substitute the altitude into the formula 20400 = 3400 | subtract 600 from both sides 6 = t | divide both sides by 3400 6 minutes
