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  1. ...12, so y = 48/12 = 4. (b) The number of black balls is 48 - x - y = 48 - 3 - 4... number be n. After taking out n black balls, there are (48 - n) ...

    分類:科學及數學 > 數學 2020年09月13日

  2. Q1)  設事件 E 代表 the first ball drawn is blue, 事件 F 代表 the second drawn is red. P{E∩F} = 2/5 × 3/4 = 3/10 P{F} = P{E∩F} + P{E'∩F...

    分類:科學及數學 > 數學 2020年06月29日

  3. ...the two motions are 90 degrees out of phase. From theroy in Simple ...clear explanation on water waves. You may take a look on it : http://labman.phys.utk.edu/phys221core/modules...

    分類:科學及數學 > 物理學 2018年02月04日

  4. ...to themselves; follies of mankind. Reflection:- ...time spent on rose makes it so sweet-smelling, beautiful and... growing up,we delete,strike, take out those qualities we were...

    分類:社會及文化 > 語言 2018年01月27日

  5. 餐點可以收了嗎? Are you done with that? Can I get it out of your way? May I take your plate, Sir/Madam? Are you finished? ...

    分類:社會及文化 > 語言 2017年12月29日

  6. ...special role in REM sleep; it sends signals..., so that we don’t act out our dreams...cortex (the covering of the brain that interprets...sleep patterns by taking small amounts of melatonin...

    分類:科學及數學 > 生物學 2017年06月14日

  7. ...velocity) will equally apply. Now, if we take moment about the left wheels as what... (counterclockwise moment), the weight of the car (mg) (clockwise moment) and the centrifugal... "net moment" will thus turn out not to be zero. Should you include...

    分類:科學及數學 > 物理學 2016年12月26日

  8. ...neutral atom becomes a +ve ion. It can be viewed as a +ve ...in ionization raises the potential of the original neutral atom from zero to a certain...in which energy is given out . The potential of the object will...

    分類:科學及數學 > 物理學 2016年12月04日

  9. Dear DNF:- (1)advantage (2)revolutionary (3)yourself (4)sure (5)offer (6)at (7)grown (8)should (9)to contact (10)comprehensive

    分類:社會及文化 > 語言 2016年11月13日

  10. ... been building up its stock of weapons against China. IN... Chinese wine is completely out of stock this week. Take stock is to check and count the ...

    分類:社會及文化 > 語言 2016年11月02日