Search found 29 matches
- by Hano
Sun Sep 14, 2008 7:29 pm- Forum: Problem Solving
- Topic: Xiang and used cars
- Replies: 5
- Views: 7362
- by Hano
Sun Sep 14, 2008 7:39 am- Forum: Problem Solving
- Topic: Xiang and used cars
- Replies: 5
- Views: 7362
Xiang and used cars
In My, Xiang sold 15 used cars. For these 15 used cars the range of selling prices was 15,000 and the lowest selling price was 4,500. In June, Xiang sold 10 cars. For these 10 cars the range of selling was 16,000 and the lowest selling price was 6,100. What was the range of selling prices for the 25...
- by Hano
Sat Sep 13, 2008 10:45 pm- Forum: Problem Solving
- Topic: Xiang and used cars
- Replies: 5
- Views: 7362
H(n)
For every positive even integer n, the function h(n) is defined to be the product of all even integers from 2 to n, inclusive. If p is the smallest prime factor h(100)+1, then p is
a) between 2 and 10
b) between 10 and 20
c) between 20 and 30
d) between 30 and 40
3) greater than 40.
Please help!
- by Hano
Sat Sep 13, 2008 6:21 pm- Forum: Problem Solving
- Topic: H(n)
- Replies: 1
- Views: 1298
- by Hano
Fri Dec 07, 2007 8:48 pm- Forum: Problem Solving
- Topic: coin flipped?
- Replies: 6
- Views: 1924
- by Hano
Fri Dec 07, 2007 6:07 pm- Forum: Problem Solving
- Topic: f(x)=x-10
- Replies: 5
- Views: 6086
f(x)=x-10
The function f is defined by f(x) = √x – 10 for all positive numbers x. If u = f(t) for some positive numbers t and u. What is t in terms of u?
A. √(u+10)
B. (√u + 10)^2
C. √(u^2+10)
D. (u + 10)^2
E. (u^2 + 10)
please explain
- by Hano
Thu Dec 06, 2007 9:56 pm- Forum: Problem Solving
- Topic: f(x)=x-10
- Replies: 5
- Views: 6086
product of units digit.
The product of the units digit, the tens digit, and the hundreds digit of the positive integer m is 96. What is the units digit of m?
(1) m is odd.
(2) The hundreds digit of m is 8.
please explain
- by Hano
Thu Dec 06, 2007 9:46 pm- Forum: Data Sufficiency
- Topic: product of units digit.
- Replies: 0
- Views: 1341
lower limit
In a demographic study, the population and total income of a certain region were estimated from other data, and both estimates had lower and upper limits. At the time of the estimates, was the per capita income for the region greater than $16,500? (1) The lower limit for the estimate of the populati...
- by Hano
Thu Dec 06, 2007 9:42 pm- Forum: Data Sufficiency
- Topic: lower limit
- Replies: 1
- Views: 1582
- by Hano
Thu Dec 06, 2007 9:40 pm- Forum: Problem Solving
- Topic: coin flipped?
- Replies: 6
- Views: 1924
coin flipped?
If a certain coin is flipped, the probability that the coin will land heads is 1/2. If the coin is flipped 5 times, what is the probability that it will land heads up on the first 3 flips and not on the last 2 flips?
A. 3/5
B. 1/2
C. 1/5
D. 1/8
E. 1/32
- by Hano
Thu Dec 06, 2007 8:28 pm- Forum: Problem Solving
- Topic: coin flipped?
- Replies: 6
- Views: 1924
- by Hano
Thu Dec 06, 2007 8:12 pm- Forum: Problem Solving
- Topic: 2^100-2^96
- Replies: 2
- Views: 2044
2^100-2^96
What is the greatest prime factor of 2^100 - 2^96?
A. 2
B. 3
C. 5
D. 7
E. 11
What is a good approach to this?
- by Hano
Wed Dec 05, 2007 10:41 pm- Forum: Problem Solving
- Topic: 2^100-2^96
- Replies: 2
- Views: 2044
- by Hano
Wed Dec 05, 2007 9:09 pm- Forum: Data Sufficiency
- Topic: Gmat prep: Surface area
- Replies: 1
- Views: 1463
The ans is indeed A.
pawha, we had the same thought and I guess those could refer to countries or the resources, so it makes the sentence not the best choice.
- by Hano
Wed Dec 05, 2007 6:39 pm- Forum: Sentence Correction
- Topic: Gmat prep: as varied as
- Replies: 17
- Views: 12494