k****o
发帖数: 11 | 1 1. Roll a die, compute the probability getting two even numbers before 3 or
5.
2. Coconut count. 4 sailors count coconut, each finds that it is not the
multiple of 4, they take their shares
(round to a whole number) and bury underground, next morning they find that
coconut not fewer than 100,
what is the minimum number of coconut in the original?
3. Tournament, n people each pair has a game. lowest 10 people each scores
half of the credits from those 10
people, ask how many people?
4. Two people are waiting for each other during 30 mins break, they arrive
at random (uniform between 0 and
30), one waits 3 mins and leave, the other waits 5 mins and leave, what is
the probability they meet?
5. Selling lemonade , customer is a linear relation of temperature (-t^2+6t
-5), and inverse relation of price
(p^2-4p+3), cost is 3 cents per cup, how to max the profit? (not sure about
the number)
Enjoy! | M********t
发帖数: 163 | 2 5. Selling lemonade , customer is a linear relation of temperature (-t^2+6t
-5), and inverse relation of price
(p^2-4p+3), cost is 3 cents per cup, how to max the profit? (not sure about
the number)
题意是这样，但是你的这个系数也错太多了。。。。。。。。
not even close
-T^2+160T+1000 | M********t
发帖数: 163 | 3 第四题2个人叫
ZANE 和 YARROW
。。。。。。
佩服LZ勤奋总结的精神！ | k****o
发帖数: 11 | 4 我说了(not sure about the number)。
谢谢更正。
6t
about
【在 M********t 的大作中提到】
: 5. Selling lemonade , customer is a linear relation of temperature (-t^2+6t
: -5), and inverse relation of price
: (p^2-4p+3), cost is 3 cents per cup, how to max the profit? (not sure about
: the number)
: 题意是这样，但是你的这个系数也错太多了。。。。。。。。
: not even close
: -T^2+160T+1000
| e********5
发帖数: 422 | 5 这CS在哪儿的考试啊？chicago？怎么感觉比在stanford的难~~ |
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