[計量] CAT計量請教
不好意思請教各位幾題CAT上的計量問題
有些是解法不確定有些是想不出來
麻煩各位了~謝謝~
1 A the percent increase of the area of a circle if its diameter is double
B 400
pi * r^2 -> 4 * pi *r^2 so (1+x)/1 = 4/1 x = 3 => 300% B大 請問是這樣解嗎?
2 of the 120 people in a room. 3/5 are women, and 2/3 are married
A: max number of women in the room who could be unmarried
B: 72
men women total
married 80
unmarried max 40 40
48 72 120 so max unmarried women = 40 這樣解嗎?
3 three friends are playing a game in which each person simultaneous displays
one of three hand signs: a clenched first, an open palm, or two extended
fingers. how many different combination of signs are possible?
ans 10
S ^
| ^
4 | ^ in the figure arc,SBT is one quarter of a
A |\ ^ B cicle with center R and r = 6. if the length
| \ ^ plus the width of rectangle ABCR is 8. then
| \ ^ the perimeter of the SBTCA is
| \ ^
|____\________^ T ans 10+3*pi 請問AC線段怎麼算
R C
5 A gardener is going to plan 2 red rose and 2 white rose.
if the gardener is to select each of the rose randon, one at a
time and plant them in a row, what probability that the 2 rose in
the middle of the row will be the red ones?
ans 1/6
6 the probabilities of two independent events are p and 2p respectively
with 0<2p<1
A P
B 1-P ans B大
7 how many minutes does the mimute hand of a clock take to meet the hour hand
form 8.00 to 9.00
ans 480/11
不好意思麻煩各位了
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