[計量] 求兩題DS題目
GWD第九回
Q26
In the decimal representation of x, where 0 < x < 1,
is the tenths digit if x nonzero?
(1) 16x is an integer.
(2) 8x is an integer.
句意不是很懂，希望大家幫忙一下感謝。 ANS: B
Q23
When tossed, a certain coin has equal probability of landing on either side.
If the coin is tossed 3 times, what is the probability that it will
land on the same side each time?
我算是 1/2*3 =1/8 感覺是這樣 可是答案卻是 1/4 0.0
麻煩大家了!!!感謝
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07/26 22:21, , 1F
07/26 22:21, 1F
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