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作者: WangYoucai   ³õÖжù×ÓµÄÊýѧ¾ºÈü×¼±¸ÊÔÌâ 2023-01-28 10:30:29  [点击:6406]
Ȼһµ֮ǰҪɵĿûɣҪĩдdecks (Ŀе㸴ӣΪѾ3 modelsдĸdecksǵdecksȽmodels Ľѡ໥ѷ2023Լ˾ҵչ
жҪμѧ׼ϰҲʼˡ

ΪӿҹæĸסܲĿѡ˶Ŀ衣һ£оеѣ⡣˳㿴һ£

һ⣺

Yu has 12 coins, consisting of 5 pennies, 4 nickels and 3 dimes. He tosses them all in the air. What is the probability that the total value of the coins that land heads-up is exactly 30 cents? Express your answer as a common fraction

⻹ãѡ


: 46/2**12 򻯵 23/2**11



ڶ⣺

How many ordered quintuples (a,b,c,d,e) have coordinates of values -1, 0, 1 and satisfy a+b**2+c**3+d**4+e**5=2?

ĿӢһʼûʲô˼룬֪Ŀ˼ое㸴Ҫһһ˵

𰸣3+244x6) + 28 (4x7) = 55



϶кܶѧĿʱĻһȥһЩĿ˽ѧУиеѧĿԺѧĿҲȤһСʱ뵱ʦ֮Dzǿ֤Ҳȥ־Ըʦ
���༭ʱ��: 2023-01-30 14:14:26

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