Search found 22 matches
Probability
Q: Point (A,B) is randomly selected inside the circle x^2+y^2=1. What is the probability that A>B>0? Ans:[spoiler]1/8[/spoiler] I was trying to figure out the solution for this problem but could not get ans: 1/8. Since the radius of the circle is 1, only when point (A,B) is in 1st quadrant shall we ...
- by Gmat Bond
Sat Dec 19, 2015 6:17 am- Forum: Problem Solving
- Topic: Probability
- Replies: 1
- Views: 3442
Forget conventional ways of solving math questions. In PS, IVY approach is the easiest and quickest way to find the answer. Q:If g(x)=x^2-x+7, and g(f(x))=9x^2+9x+9, then f(x) is ? Hi! Bond, this is my algebraic approach. First of all g(x) and g(f(x)) is polynomials, we may assume that f(x) is also...
- by Gmat Bond
Thu Oct 08, 2015 6:30 am- Forum: Problem Solving
- Topic: Functions-Composition
- Replies: 3
- Views: 1460
Functions-Composition
Q:If g(x)=x^2-x+7, and g(f(x))=9x^2+9x+9, then f(x) is ? OA 3x+2.
How can we solve this question algebraically without plugging back the option into the original expression ? Request an algebraic solution. Please do not plug back the answer into the original expression. Thanks in advance !
- by Gmat Bond
Wed Oct 07, 2015 1:38 am- Forum: Problem Solving
- Topic: Functions-Composition
- Replies: 3
- Views: 1460
Function problem
For which of the following functions is f(a+b) = f(a) + f(b) for all positive numbers of a & b.
A). f(x) = x squared
B). f(x) = x + 1
C). f(x) = sq root of x
D). f(x) = 2/x
E). f(x) = -3x
How to solve this function?
- by Gmat Bond
Tue May 19, 2015 1:42 am- Forum: Problem Solving
- Topic: Function problem
- Replies: 2
- Views: 1403
In La Plata, Argentina, one of the first cities that was offering the public complimentary wireless Internet access; anyone with a wireless-enabled device can access the Internet from virtually any location in the downtown area. a) that was offering the public complimentary wireless Internet access...
- by Gmat Bond
Sun May 10, 2015 1:11 am- Forum: Sentence Correction
- Topic: Bad test question?
- Replies: 1
- Views: 1468
Hi all ! Many thanks for the responses. Rich has made a very good point that the GMAT will not require to factor a sum of squares though sum of squares can be factored. I think it was an overgeneralisation to claim that sum of squares can not be factored. Nevertheless we don't require to bother abo...
- by Gmat Bond
Thu Nov 28, 2013 1:54 am- Forum: Problem Solving
- Topic: Factors
- Replies: 16
- Views: 2915
If 96 percent of women 25-59 years of age at Country Q weigh between 97.5 lbs and 155 lbs, and this data is normally distributed, then which of the following is the best approximation for the mean and standard deviation of their weights in pounds, respectively? A. 100 and 30 B. 110 and 25 C. 120, a...
- by Gmat Bond
Tue Nov 26, 2013 7:59 am- Forum: Problem Solving
- Topic: women 25-59 years of age
- Replies: 8
- Views: 1906
- by Gmat Bond
Tue Nov 26, 2013 7:42 am- Forum: Problem Solving
- Topic: probability
- Replies: 2
- Views: 1050
Mary passed a certain gas station on a highway while traveling west at a constant speed of 50 miles per hour. Then, 15 minutes later, Paul passed the same gas station while traveling west at a constant speed of 60 miles per hour. If both drivers maintained their speeds and both remained on the high...
- by Gmat Bond
Sat Dec 04, 2010 12:09 pm- Forum: Problem Solving
- Topic: relative speed
- Replies: 3
- Views: 1344
Q: Green Dart is a renowned packager of fruits in L.A . It has 2 employees : a man and his wife .The man packs 70 mangoes or 56 guavas every day working 7 hours a day.His wife packs 30 mangoes or 24 guavas working 6 hours a day.The man has to pack 3300 mangoes and 2400 guavas with the help of his w...
- by Gmat Bond
Sat Sep 18, 2010 9:05 am- Forum: Problem Solving
- Topic: Fruit Packers
- Replies: 4
- Views: 1253
- by Gmat Bond
Fri Sep 17, 2010 11:22 am- Forum: Problem Solving
- Topic: Fruit Packers
- Replies: 4
- Views: 1253
- by Gmat Bond
Tue Sep 14, 2010 9:17 am- Forum: Problem Solving
- Topic: Nut-Bolt Series
- Replies: 5
- Views: 5341
- by Gmat Bond
Tue Sep 14, 2010 9:16 am- Forum: Problem Solving
- Topic: plz solve this...
- Replies: 6
- Views: 1158
- by Gmat Bond
Tue Jun 01, 2010 8:11 am- Forum: I just Beat The GMAT!
- Topic: GMAT 760 (Q49 V45)
- Replies: 10
- Views: 2800
You mentioned substituting value of x , but can you elaborate how we get to the answer 0.selango wrote:(x-3)^3=x3-9x2+27x-27
So x3-9x2+18x-12 = (x-3)^3-9x+15
Substituting value of x we will get answer 0
I am not sure whether we will get this kind of long algebra prob in real GMAT.
- by Gmat Bond
Tue Jun 01, 2010 8:07 am- Forum: Problem Solving
- Topic: Algebra
- Replies: 6
- Views: 3910