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powers and logs
I know that logarithms are not tested on the GMAT, but this one is a nice exercise for powers. Mods, kindly please move the post if this is outta scope.Please explain step by step how you get your...
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Is (x^7)(y^2)(z^3)>0 ?
This topic have been merged with: http://gmatclub.com/forum/topic-127692.html
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A certain car dealership sells only Full-size and Mid-size c
A certain car dealership sells only Full-size and Mid-size cars. One of its sales representatives receives an annual salary of $15,000. He also receives a commission of $800 for each full size car he...
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A query on Inequality
If -9<x<6What will be the range for inequality for x^2?I believe it should be 0<x^2<81Can somebody help on this?
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Thurston wrote an important seven-digit phone number on a na
Thurston wrote an important seven-digit phone number on a napkin, but the last three numbers got smudged. Thurston remembers only that the last three digits contained at least one zero and at least one...
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Find unit digit of N when N = 63^1!+2!+...+63! + 18^1!+2!+.
Find unit digit of N when N = 63^1!+2!+...+63! + 18^1!+2!+...+18! + 37^1!+2!+...37!A) 2B) 4C) 6D) 8E) 0
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find the domain
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The next number in a certain sequence is defined by multiply
The next number in a certain sequence is defined by multiplying the previous term by some positive constant k, where k 1. How many of the first nine terms in this sequence are greater than 1?(1) The...
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A retailer purchased a television set for x percent less tha
A retailer purchased a television set for x percent less than its list price, and then sold it for y percent less than the list price. What was the list price of the television set?(1) x = 15(2) x y = 5
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In the formula above, a, b, c, and d are positive numbers.
x = 8(a/c) + 16(b/c)In the formula above, a, b, c, and d are positive numbers. If c = a + b and b > a, which of the following could be the value of x?(A) 8(B) 10(C) 12(D) 15(E) 21
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A warehouse is labeling computer inventory with 4-digit code
A warehouse is labeling computer inventory with 4-digit codes. Each code is to consist of four digits between the numbers 0 and 9. The manager is debating whether to allow any 4-digit codes to have...
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For every even integer 2n from 1 to 8, inclusive
For every even integer 2n from 1 to 8, inclusive, the nth term of a certain sequence is given by (1)^n(1/2^n) . If S is the sum of such a sequence then S isA. Between -1 and -1/2B. Between -1/2 and 0C....
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Which of the following expressions CANNOT have a negative va
Which of the following expressions CANNOT have a negative value?A) |a + b| |a b|B) |a + b| |a|C) |2a + b| |a + b|D) a^2 + b^2 2|ab|E) |a^3 + b^3| a b
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Peter can drive to work via the expressway or via the city
Peter can drive to work via the expressway or via the city roads, which is a less delay-prone route to work. What is the difference in the time Peter would spend driving to work via the expressway...
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If the price of a chocolate bar is doubled
If the price of a chocolate bar is doubled, by what percent will sales (quantity sold) of the chocolate bar decrease?(1) For every 15 cent increase in price, the sales (quantity sold) will decrease by...
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Easy technique to convert Recuring Rational to fraction!!!
Rational NumbersAny number that can be expressed as a ratio of two integers is called a rational number. This group contains decimal that either do not exist (as in 6 which is 6/1), or terminate (as in...
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If x^2 - y^2 = 101, find the value of x^2 + y^2, given that
If x^2 - y^2 = 101, find the value of x^2 + y^2, given that x and y are natural numbers.OA: [Reveal] Spoiler: 5,101
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During a season in a certain baseball league every team play
During a season in a certain baseball league every team plays every other team in the league 10 times. If there are ten teams in the league, how many games are played in the league in one season?(A)...
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A quick question about fractions
\frac{12ab^3-6a^2b}{3ab}Given that ab\neq{0}Can somebody help me how to solve this problem?I don't know how to simplify the common terms in the numerator.
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Is |A-X|
Found this question in GMAT Club Math book. The question has only one portion of DS to illustrate a concept. I am unable to understand how to solve this.Problem: A<X<Y<B. Is |A-X| <|X-B|?1)...
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