Search found 70 matches
Is 2x - 3y < x^2 ?
1) 2x - 3y = -2
2) x>2 and y>0
IMO:d
s1) IF 2x-3y is negative always will be less than something square.
s2) if x>2 and y>0 always true
- by figs
Tue May 26, 2009 6:02 am- Forum: Data Sufficiency
- Topic: a DS that dances.
- Replies: 2
- Views: 1496
In a sequence, each term is obtained ..
In a sequence, each term is obtained by adding 4 to the preceding one. If the sum of the first 10 terms is equal to 80, what is the result of the addition of the first 40 terms? A. 94 B. 320 C. 2,720 D. 27,200 E. 54,400 can anyone explain the procedure? what's about the sum of a aritmetic sequence?
- by figs
Tue May 26, 2009 5:52 am- Forum: Problem Solving
- Topic: In a sequence, each term is obtained ..
- Replies: 2
- Views: 1363
If you have a look to all the answers except E, you can see that all the answers include the number 0 (except E).
and 0-0=0 and it's not bigger than 5.
- by figs
Mon May 25, 2009 4:33 am- Forum: Problem Solving
- Topic: z² - 4z > 5
- Replies: 7
- Views: 1875
If the least common multiple
If the least common multiple between two positive integers is 120 and their ratio is 3 to 4, what is their greatest common divisor?
A. 5
B. 10
C. 12
D. 15
E. 20
- by figs
Mon May 25, 2009 4:23 am- Forum: Problem Solving
- Topic: If the least common multiple
- Replies: 6
- Views: 5334
On a certain assembly
On a certain assembly line, the rejection rate for Monday’s production was 4 per cent, for Tuesday’s 8 per cent, and for the two days combined 7 per cent. What was the ratio of Tuesday’s production to Monday’s production?
A. 3/1
B. 2/1
C. 1/1
D. 1/2
E. 1/3
oa..later
- by figs
Mon May 25, 2009 4:22 am- Forum: Problem Solving
- Topic: On a certain assembly
- Replies: 2
- Views: 6480
A seesaw K feet long
A seesaw K feet long is supported at its center by a frame N feet high, where 2N is less than k. What is the greatest number of feet either end of the seesaw can rise above the ground?
A. k/N
B. N
C. k/2 +N
D. 2N
E. KN
I think that i don't understand the quetion...
- by figs
Mon May 25, 2009 4:20 am- Forum: Problem Solving
- Topic: A seesaw K feet long
- Replies: 2
- Views: 1989
If the number of different positive factors
If the number of different positive factors(2^y)(3^3)is the same as the number of different factors of 2^51, what is the value of y ?
A.11
b.12
c.13
d.48
e.51
if someone know the answer, can explain how to solve it?
- by figs
Mon May 25, 2009 4:18 am- Forum: Problem Solving
- Topic: If the number of different positive factors
- Replies: 2
- Views: 1526
the best integer approximation of
which of the following is the best integer approximation of sqr(2)+sqr(5)+sqr(7)??
A) 6
B) 7
C) 8
D) 9
E) 10
Some trick to calculate sqr?
- by figs
Tue May 19, 2009 12:50 pm- Forum: Problem Solving
- Topic: the best integer approximation of
- Replies: 2
- Views: 1360
If A, then B. If B, then C....
If A, then B.
If B, then C.
If C, then D.
If all of the statements above are true, which of the following must also be true?
A. If D, then A
B. If not B, then not C
C. If not D, then not A
D. If D, then E
E. If not A, then not D
- by figs
Tue May 19, 2009 12:34 pm- Forum: Critical Reasoning
- Topic: If A, then B. If B, then C....
- Replies: 9
- Views: 8623
According to Henry David Thoreau,
According to Henry David Thoreau, the reason a majority is allowed to rule is not that it is more likely to be right but because it is stronger. A.the reason a majority is allowed to rule is not that it is more likely to be right, but because it is stronger B.a majority is allowed to rule not becaus...
- by figs
Tue May 19, 2009 12:32 pm- Forum: Sentence Correction
- Topic: According to Henry David Thoreau,
- Replies: 11
- Views: 6795
- by figs
Mon May 18, 2009 8:58 am- Forum: Sentence Correction
- Topic: Not all employment selection
- Replies: 9
- Views: 4292
- by figs
Mon May 18, 2009 8:58 am- Forum: Sentence Correction
- Topic: Neanderthals had a vocal
- Replies: 10
- Views: 2482
Neanderthals had a vocal
Neanderthals had a vocal tract that resembled those of the apes and so were probably without language, a shortcoming that may explain why they were supplanted by our own species. A.Neanderthals had a vocal tract that resembled those of the apes B.Neanderthals had a vocal tract resembling an ape's C....
- by figs
Sun May 17, 2009 4:30 am- Forum: Sentence Correction
- Topic: Neanderthals had a vocal
- Replies: 10
- Views: 2482
Not all employment selection
Not all employment selection mechanisms that have a "disparate effect," that is, that screens out a percentage of minorities or women disproportionate to their presence in the relevant labor market, are unlawful. A.that is, that screens out a percentage of minorities or women disproportion...
- by figs
Sat May 16, 2009 1:34 am- Forum: Sentence Correction
- Topic: Not all employment selection
- Replies: 9
- Views: 4292
- by figs
Wed May 13, 2009 10:33 am- Forum: Problem Solving
- Topic: x is equal to the product of the first n positive integers
- Replies: 7
- Views: 3825