[計量] 請教幾題~"~
#1
5. If [x] reprents the greatest integer less than or equal to x,
what is the solution to the equation 1 - 2[x]=-3
(a)x=2
(b)2<= x <3
(c)2<x<=3
(d)2<x<3
(e)there is no solution Ans:(b)
這是說例如2.xx=3嗎 還是2.xx=2?
20. if a cube has an edge of length 10, then the length of the segement
connecting the center of a face of the cube to any vertex not contained
in the plane of that face is
(a) √6 (b)6√5 (c)5√6 (d)3√5 (e)10√6 Ans:c
**前面剛有人po過 不過回文還是看不懂..冏
28.After the first term, each term in a sequence is 3 greater than 1/3 of
the preceding term. If t is the first term of the sequence and t≠0, what
is the ratio of the second term to the first term?
Ans:(t+9)/3t
題目看不懂.. 3 greater than 1/3那邊
#2
6. if the sum of the two number is 21, and the difference of their square
is 63, what is the greater of the two numbers?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^問啥@@"
Ans:12
8. For all real number, 6a-2, 3a, and a+2 are in arithemetic progression.
Column A: a+1
Column B: 0
Ans:A
順便想問real number的定義為何?實數包含正整數 負整數 and??
22. of the 120 people in a room, 3/5 are women, and 2/3 are mirried.
^^這個and是說其中女性有2/3結婚
還是說120個裡面2/3結婚XD
Column A: the maximum number of women in the room who could be unmarried.
Column B: 72
Ans:B
28. the sum of the digis of a three-digit number is 16.
The tens digit of the number is 3 times the units digit, which is 1/4
of the hundreds digit.
column A: the three-digit number
Column B: 800
Ans:A
有點多 請見諒~"~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.136.37.73
※ 編輯: butini 來自: 220.136.37.73 (05/20 21:14)
※ 編輯: butini 來自: 220.136.37.73 (05/20 21:49)
討論串 (同標題文章)