Search found 11 matches
Decimals : Problem Solving (Medium)
If p = 5.18r7, what is the result when p is subtracted from p rounded to the nearest thousandth?
A) -0.001
B)-0.0007
C)-0.0003
D) 0.0003
E) 0.001
Answer: D
How do we derived the answer if we don't even know what r is?
- by bkk_marc
Tue Aug 30, 2011 11:09 pm- Forum: Problem Solving
- Topic: Decimals : Problem Solving (Medium)
- Replies: 3
- Views: 2463
Math; Number Properties Problem (Easy)
Which of the following CANNOT be a product of two distinct positive integers a and b?
A) a
B) b
C) 3b+2a
D)b-a
E)ba
Answer :D
I am confuse why answer choice C. I understand the Answer, but I don't understand the answer C.
- by bkk_marc
Tue Aug 30, 2011 10:39 pm- Forum: Problem Solving
- Topic: Math; Number Properties Problem (Easy)
- Replies: 2
- Views: 1168
Thanks for all the help.
The source of this question comes from a worksheet that I was given to do as homework from my GMAT class here in Thailand. The school is called Sage Education.
Cheers
- by bkk_marc
Sat Apr 16, 2011 10:45 pm- Forum: Sentence Correction
- Topic: Parallel Construction Sentence Correction Problem :)
- Replies: 9
- Views: 1796
Parallel Construction Sentence Correction Problem :)
To provide a child with skills necessary for survival in modern society is like guaranteeing their success in life A) To provide a child with skills necessary for survival in modern society is like guaranteeing their success B) Providing a child with the skills necessary for survival in modern soci...
- by bkk_marc
Sat Apr 16, 2011 1:03 am- Forum: Sentence Correction
- Topic: Parallel Construction Sentence Correction Problem :)
- Replies: 9
- Views: 1796
Thanks!!!
- by bkk_marc
Sun Nov 21, 2010 7:52 am- Forum: Problem Solving
- Topic: Exponents and Algebra questions
- Replies: 6
- Views: 1869
Product of all Numbers type of Question
Hi, I been having problems with these types of questions lately. Anyone fancy giving me a few tips and approach strategy?
"If n is a positive internet, and the product of all integers from 1 to n is a multiple of 990, what is the lowest possible integer for n?
a.10
b.11
c.12
d.13
e.14
b
- by bkk_marc
Sun Nov 21, 2010 5:50 am- Forum: Problem Solving
- Topic: Product of all Numbers type of Question
- Replies: 1
- Views: 835
First off, thank you for the clear explanation. I was just too narrow minded on plugging in and didn't consider doing it algebraically.. However, I have a question on the first question. How did you factorized 1 / [2 * (2*5) ^ 35] to 1 / [(2 ^ 36) * (5 ^ 35)] ? I understand everything else before an...
- by bkk_marc
Sun Nov 21, 2010 5:06 am- Forum: Problem Solving
- Topic: Exponents and Algebra questions
- Replies: 6
- Views: 1869
Exponents and Algebra questions
Can anyone help me out with good explanation? Thanks in advance.
1. (1/5)^m (1/4)^18 = 1/2(10)^35
What is the value of m?
- 17
-18
-34
-35
-36
35
2. XY + Z = X(Y+Z), which of the following must be true?
-X=0, Z=0
-X=1, Y=1
-Y=1, Z=0
-X=1,Y=0
-X=1,Z=0
[spoiler] X=1,Z=0[/spoiler]
- by bkk_marc
Sun Nov 21, 2010 1:58 am- Forum: Problem Solving
- Topic: Exponents and Algebra questions
- Replies: 6
- Views: 1869
do you have another shorter and easier method to understand this? Umm sure. I guess if you can create an equation for both (1) and (2) and see that there are two same variables, then you can solve for it. But this is Data Sufficiency, so of course you go through the AD, BCE strategy. If (1) is not ...
- by bkk_marc
Sun Nov 07, 2010 7:41 pm- Forum: Problem Solving
- Topic: Solution for this problem?
- Replies: 4
- Views: 1276
I think the answer would be 6. Just like how Taniuca explained. I don't think it would be 12 because you must assume that the window is on one side and do the calculations from there. If you are adding both possibilities of the windows being on either side, then you are doubling the results. I could...
- by bkk_marc
Sun Nov 07, 2010 12:38 am- Forum: Problem Solving
- Topic: Perumtation Problem - need help
- Replies: 11
- Views: 2067
Hi, I think the answer is (C) for a few reasons: First, I look at what is given: There are two elements (Bill and Tim), a time to complete a task (60 mins), and the function (Bill and Tim working together. I know that there are information missing to answer this questions. I either need the individu...
- by bkk_marc
Fri Nov 05, 2010 1:13 am- Forum: Problem Solving
- Topic: Solution for this problem?
- Replies: 4
- Views: 1276