%age Question

学习资源/Learning Resources 小学/Elementary Schooler
1

8.3.10: Andrew is playing blackjack. Every round, he bets 50% of his total money. He starts with $1000. If he wins, he wins what he bet. If he loses, he loses what he bet. After 5 rounds, he wins 3 and loses 2. How much money does he end up with? Does it matter what order he wins/loses? If not, why?

--------------SPOILER WALL!! THE FOLLOWING QUESTION EXPLAINS 8.3.10!!-------------

8.3.11:
a) Let’s say 0 < p < 100. If we increase 100 by p% and then decrease that by p%, is the number larger or smaller than 100?
b) Let’s say 0 < q < 100. If we decrease 100 by q% and then increase that by q%, is the number larger or smaller than 100?
GOOG

2

This is a topic because IDK how to make a poll.

3

I think order doesn’t matter. Using two round as an example, win-lose case end up with (1000+500) - 750 = 750; lose-win end up with (1000-500) + 250 = 750.

Since the order of any two adjacent rounds doesn’t matter, order of multiple rounds doesn’t matter either.

4

Is the answer 1000 * {1.5^3} * { 0.5^2} ?

5

@that-tree Correct!