[計量] 五題數學請教
這是CAT上test 1中幾題我想不出來和不確定解法的題目
想請教一下各位
2 At a congress, 50% of the congressmen are from part A,
40% ............................... B
10% ................................ remander
if 80% of all the congressmen vote no on a certain issue, what will
the least percent of the congressmen from part B vote no
ANS : 50% 這是我的算法 (50%+40%)*80% *4/9 = 30% 請問哪邊錯??
12 the number of ways that a btacelet may be strung up with seven different
color breads
我算7!可是錯
16 Pat goes to the toy store to buy 2 distinct balls, either a football,
basketball or soccer ball and 3 different board games if the toy store
is stocked with all types of balls but only 6 different types of board
games. how many different selections of 5 items can Pat make?
拍謝~我不會解
20 If a cube has an edge of length 10, then the length of the segment
connecting the center of a face of the cube to any vertex not contained
in the plane of that face is
看不是很懂在問什麼
28 After the first term,each term in a sequence is 3 greater than 1/3 of
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?
拍謝~我不會解
請問誰有CAT的詳解一直上版問也不是辦法
或著誰可以和我一起討論問題
有意者站內回非常謝謝各位
--
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 61.64.156.172
→
06/10 07:43, , 1F
06/10 07:43, 1F
→
06/10 10:16, , 2F
06/10 10:16, 2F
討論串 (同標題文章)