请问heads and tails 是什么?

请问heads and tails 是什么? Heads Or Tails 歌词 heads or tails 为什么是复数? 英语翻译Ten little ducklingsTen little ducklings,Swimming here and there.Heads are in the water,Tails are in the air. Six without heads,nine without tails and eight in halfDo you konw how many fishes has San Mao got? 英语翻译I want to go to the science museum,but I have been lost for the past few hours,and I can't make heads or tails of these tickets machines.请翻译其中的“make heads or tails”是什么意思, The Dragon Boat FestivalThere are b___ races in mang places of china.the boat are l____ and have colourful d____ heads and tails. 排列组合 Flipping a fair coinFlipping a fair coin.Assume that the coin is flipped 7 times.What is the probability that both heads and tails occur?Thank you~ when I read the telegram, I just couldn't make heads or tails out of it.head or tail是啥意思, 整句话是啥意思 The boats are long and have colour d____ heads and tails.Some people visit homes for the elderly.ISome people visit homes for the elderly.It's a____ a t_____ to climb mountains. can't make heads or tails of it 中文翻译是什么?中文可翻译成什么意思? 英语翻译If a tossed coin comes up 'heads',ten times in a row,is it more or less likely to show 'tails' on the next throw?If you think it must be tails,you are falling for the gambler's fallacy,the idea that sequences of results are connected.And Nancy's fish have bigeyes,bodies and tails.一般疑问句 谁知道fat bodies and short tails are like 北大ACM DescriptionSnoopy has three coins.One day he tossed them on a table then and tried to flip some of them so that they had either all heads or all tails facing up.After several attempts,he found that regardless of the initial configuration of 英语数学题,有关概率的independent eventConsider the following experiments and events:(i)A fair coin is tossed 5 times.E is the event that the first toss is heads.F is the event that the third toss is tails.(ii)A fair coin is tossed 3 times.E Governors and Heads of Supervision怎么翻译 okay,coconut man,moon heads and pea