加载中…下馆子去，助人乐己
(2020-11-07 09:23:33)
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旅游美食文化娱乐健康 |
下面四题可供参考。
（１）How many people is three trios of triplets thrice?
(triplets，3胞胎、thrice，3倍)
（２）If you flip a coin 3 times, what is the probability of flipping at least 2 Heads? (head，表面)
（３）This morning 100kg of marrows were put in the sun. They were 99% water, but through the day they lost moisture to evaporation and now they are only 98% water. How much do they weigh now? (marrow，形似黄瓜的南瓜)
（４）If I gave you £100 today and you paid me back £10 every month for a year, what is the annual interest rate on your loan?
注：“trios of triplets”三胞胎、双胞胎“a pair of twins ”。硬币投三次与三个硬币投一次出现的正反两面的几率一样。出现的可能性排列组合。百分比和总重量完全不同。水若是99％其固体成分为1％、比率1/99。水为98%(倍)则固体成分为2％、固体成不变、比率为1/49。金利，複利計算。
答：27、50%、50Kg、41.3%
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