Search found 131 matches
Quadrilateral inscribed in circle
Quadrilateral PXQY is inscribed in a circle. Is angle x equal to angle y?
1). Angle P is not equal to Q.
2). PQ is the diameter of the circle.
Oa B
- by mariah
Sat Feb 04, 2012 4:16 am- Forum: Data Sufficiency
- Topic: Quadrilateral inscribed in circle
- Replies: 1
- Views: 1004
kids probability
A couple wants four children. If the probability that, on each birthing, the baby is boy or girl is equal to each other, what is the probability the they will exactly produce two boys and two girls?
oa [spoiler]3/8[/spoiler]
- by mariah
Fri Feb 03, 2012 3:20 pm- Forum: Problem Solving
- Topic: kids probability
- Replies: 2
- Views: 1271
median /average
List A has A numbers, median of which is 85 and average of which is 82.
List B has b numbers, median of which is 78 and average of which is 75.
When two lists combined, is the median greater than the average?
1). A+b=97
2). A=42, b=37
oa E
- by mariah
Fri Feb 03, 2012 6:55 am- Forum: Data Sufficiency
- Topic: median /average
- Replies: 1
- Views: 1073
- by mariah
Fri Feb 03, 2012 5:41 am- Forum: Data Sufficiency
- Topic: m>n?
- Replies: 7
- Views: 1855
work rate
At their respective rates, machine A produced 6000 nails and B produced 8000 nails. Is A cost more time than B?
1). B can produce 2000 more nails than A during an hour.
2). B's rate is twice that of A
oa not provided imo B
- by mariah
Fri Feb 03, 2012 2:59 am- Forum: Data Sufficiency
- Topic: work rate
- Replies: 1
- Views: 927
heart problem
Of 50 persons, 20% have heart problem, 8% have both heart problem and heavy blood pressure, how many of them have heart problems but don't have heavy blood pressure? answer seems easy - 6 , but oa given with explanation is [spoiler]100 = 20 -8 + X; X = 88; Number of people = .88 * 50 = 40 + 4 = 44 [...
- by mariah
Thu Feb 02, 2012 8:44 am- Forum: Data Sufficiency
- Topic: heart problem
- Replies: 3
- Views: 1235
- by mariah
Wed Jan 25, 2012 9:20 am- Forum: Data Sufficiency
- Topic: x/y < b/c ?
- Replies: 2
- Views: 932
lines
Line m and n are perpendicular to each other. Is the abscissa of their intersection -1?
1) The slope of m=1/7
2) n passes through point (0,4)
oa E
- by mariah
Sun Jan 15, 2012 5:05 am- Forum: Problem Solving
- Topic: lines
- Replies: 3
- Views: 1218
inequality
if y and x are integers (-4)^6x+3^y>0
1)x=3
2)Y=3
if x=0 does (-4)^0 equal to 1 or to -1?
- by mariah
Fri Dec 16, 2011 2:24 pm- Forum: Data Sufficiency
- Topic: inequality
- Replies: 2
- Views: 1055
tought inequalities
If x/y >2, is 3x+2y<18?
a. x-y is less than 2
b. y-x is less than 2
oa a
question to experts : i know that we can add inequalities when both have same ">" signs but can we substruct inequalitities?
- by mariah
Wed Nov 30, 2011 7:31 am- Forum: Data Sufficiency
- Topic: tought inequalities
- Replies: 3
- Views: 1240
canadian controlers
In a show of support for their striking counterparts, Canadian controllers refused to handle flights bound for or that were originated in the united states. a) bound for or that were b) bound for or that had c) that were bound for or were d) that were bound for or had e) which had been bound for or ...
- by mariah
Tue Nov 01, 2011 6:40 am- Forum: Sentence Correction
- Topic: canadian controlers
- Replies: 6
- Views: 1471
- by mariah
Sun Oct 23, 2011 2:58 pm- Forum: Sentence Correction
- Topic: Maesanin
- Replies: 5
- Views: 2311
the trend of demographics and economics
( In combination, the trend of demographics and economics indicate) that the regions of the United States will continue to become more disparate in their problems and needs. a. In combination, the trend of demographics and economics indicate b.The trend of demographics and economics combined indicat...
- by mariah
Thu Oct 20, 2011 2:41 pm- Forum: Sentence Correction
- Topic: the trend of demographics and economics
- Replies: 8
- Views: 1944
Maesanin
Maesanin, the active ingredient in an herbal tea used by East Africans to ward off cholera, (has an antibacterial action but by a mechanism that is neither understood nor simmilar to that of )other antibiotics. a. has an antibacterial action but by a mechanism that is neither understood nor simmilar...
- by mariah
Thu Oct 20, 2011 2:32 pm- Forum: Sentence Correction
- Topic: Maesanin
- Replies: 5
- Views: 2311
children to undergo preshool education
Since children who undergo preshool education have (been proven to be less liable) to need remedial programs later, preschool education programs are demonstrably cost effective. a. been proven to be less liable b. proved themselves not as liable c. proved to be less likely d.proven to be less liable...
- by mariah
Thu Oct 20, 2011 2:30 pm- Forum: Sentence Correction
- Topic: children to undergo preshool education
- Replies: 3
- Views: 1154