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If 3^x - 3^(x-1) = 162, then x(x - 1) =
by Vincen »
If 3^x - 3^(x-1) = 162, then x(x - 1) = A. 12 B. 16 C. 20 D. 30 E. 81...
3
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Last post by Jeff@TargetTestPrep
Tue Sep 19, 2017 2:48 pm
Problem solving
by BTGmoderatorRO »
15 lts are taken of from a container full of liquid A and replaced...
2
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Last post by GMATGuruNY
Tue Sep 19, 2017 2:56 am
Find the divisor.
by Vincen »
Two numbers when divided by a divisor leave reminders of 248 and 372...
1
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Last post by Jay@ManhattanReview
Tue Sep 19, 2017 1:22 am
Standard deviation
by BTGmoderatorRO »
Which of the following sets has the smallest standard deviation? A....
1
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Last post by Jay@ManhattanReview
Tue Sep 19, 2017 1:11 am
If the length of the largest straight
by Vincen »
If the length of the largest straight rod that can be put inside a...
1
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Last post by Jay@ManhattanReview
Tue Sep 19, 2017 12:15 am
divisors of 21,000
by kevincanspain »
I'm developing new questions for a GMAT course and wanted some...
1
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Last post by Brent@GMATPrepNow
Mon Sep 18, 2017 5:45 am
Upstream-downstream question
by r2kins »
Can somebody pls suggest a short method for solving this question: Q...
8
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Last post by SANTOSH MOHANTY
Sun Sep 17, 2017 10:12 am
How must a grocer mix 4 types . . .
by Vincen »
How must a grocer mix 4 types of peanuts worth 54 c, 72 c, $1.2 and...
1
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Last post by [email protected]
Sun Sep 17, 2017 10:08 am
Geometry
by BTGmoderatorRO »
If 20 circular pepperoni slices each with a 1 inch-diameter cover a...
1
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Last post by Jay@ManhattanReview
Sun Sep 17, 2017 6:18 am
Mixture problems
by BTGmoderatorRO »
Two kinds of Vodka are mixed in the ratio 1:2 and 2:1 and they are...
1
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Last post by Jay@ManhattanReview
Sun Sep 17, 2017 5:57 am
Difficult Math Problem #92 - Sets
by 800guy »
OA coming after some people provide answers. this comes from the...
5
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Last post by BTGmoderatorRO
Sat Sep 16, 2017 6:21 pm
Problem solving
by BTGmoderatorRO »
If x is less than 2, which of the following statements are always...
2
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Last post by BTGmoderatorRO
Sat Sep 16, 2017 11:40 am
NUMBERS
by vaibhav101 »
Find the greatest number that will divide 43,91 and 183 so as to...
2
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Last post by regor60
Fri Sep 15, 2017 10:39 am
NUMBERS
by vaibhav101 »
The number of number-pairs lying between 40 and 100 with their H.C.F...
1
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Last post by Brent@GMATPrepNow
Fri Sep 15, 2017 10:38 am
NUMBERS
by vaibhav101 »
M when factorized is written as M=a^6 x b^3 x c^5. Find the total...
1
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Last post by Brent@GMATPrepNow
Fri Sep 15, 2017 10:22 am
NUMBERS
by vaibhav101 »
In dividing a number by 585, a student employed the method of short...
0
Last post by vaibhav101
Fri Sep 15, 2017 9:51 am
NUMBERS
by vaibhav101 »
The least number, which when divided by 48,60,72,108 and 140 leaves...
0
Last post by vaibhav101
Fri Sep 15, 2017 9:44 am
If n^m leaves a remainder of 1 after . . .
by Vincen »
If n^m leaves a remainder of 1 after division by 7 for all positive...
1
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Last post by Brent@GMATPrepNow
Thu Sep 14, 2017 1:32 pm
The function f is defined for each positive...
by Vincen »
The function f is defined for each positive three-digit integer n by...
1
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Last post by [email protected]
Wed Sep 13, 2017 6:35 pm
OG2015 PS In the rectangular solid
by lionsshare »
In the rectangular solid above, the three sides shown have areas 12,...
1
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Last post by Brent@GMATPrepNow
Wed Sep 13, 2017 7:32 am
Difficult Math Question #56 - Number Theory
by 800guy »
How many 3-digit numerals begin with a digit that represents a prime...
5
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Last post by ErikaPrepScholar
Tue Sep 12, 2017 12:42 pm
The function f is defined for each positive three-digit inte
by BTGmoderatorAT »
The function f is defined for each positive three-digit integer n by...
1
Last post by DavidG@VeritasPrep
Tue Sep 12, 2017 8:07 am
Find a possible value of a+b given the equations
by ahmedshafea »
If ax+by=17ax+by=17 , 2ax+3by=432ax+3by=43 and 3x=2y3x=2y, which of...
1
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Last post by Brent@GMATPrepNow
Mon Sep 11, 2017 1:28 pm
triangular region
by ska7945 »
A certain right triangle has sides of length x, y, and z, where x...
7
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Last post by Brent@GMATPrepNow
Mon Sep 11, 2017 1:16 pm
If a 30%-solution of alcohol was mixed with
by NandishSS »
If a 30%-solution of alcohol was mixed with a 50%-solution of alcohol...
6
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Last post by Scott@TargetTestPrep
Mon Sep 11, 2017 10:20 am
OG2016 PS A positive number x
by lionsshare »
A positive number x is multiplied by 2, and this product is then...
8
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Last post by Scott@TargetTestPrep
Mon Sep 11, 2017 10:20 am
multiples of 7
by j_shreyans »
What is the sum of the multiples of 7 from 84 to 140, inclusive?...
9
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Last post by Scott@TargetTestPrep
Mon Sep 11, 2017 10:19 am
Time rate and distance
by datonman »
The question had me stumped because i forgot which formula i had to...
8
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Last post by Scott@TargetTestPrep
Mon Sep 11, 2017 10:15 am
At 15:00 there were 20 students
by NandishSS »
At 15:00 there were 20 students in the computer lab. At 15:03 and...
1
Last post by DavidG@VeritasPrep
Mon Sep 11, 2017 7:36 am
For any four digit number
by BTGmoderatorDC »
For any four digit number, abcd, *abcd*= (3^a)(5^b)(7^c)(11^d). What...
2
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Last post by GMATGuruNY
Mon Sep 11, 2017 6:42 am
If x > y, x < 6, and y > -3
by Vincen »
If x > y, x < 6, and y > -3, what is the largest prime...
1
Last post by GMATGuruNY
Sun Sep 10, 2017 1:38 pm
Problem solving
by BTGmoderatorRO »
Which of the following option is correct when (6(x^3)(y^3))^4 +...
1
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Last post by Brent@GMATPrepNow
Sun Sep 10, 2017 10:22 am
The area bounded by the curves |x + y| = 1 and |x - y| = 1
by Vincen »
The area bounded by the curves |x + y| = 1 and |x - y| = 1 is A. 3 B....
1
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Last post by Jay@ManhattanReview
Sat Sep 09, 2017 12:14 am
Which of the following options must be truth?
by Vincen »
If m, p, s and v are positive, and m/p < s/v, which of the...
3
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Last post by Jay@ManhattanReview
Thu Sep 07, 2017 9:34 pm
How many points with Integer x and Y co-ordinates lie within
by GMATinsight »
How many points with Integer x and Y co-ordinates lie within the...
2
Last post by Admin1
Wed Sep 06, 2017 7:59 pm
For each trip, a taxi company charges a fixed fee of $2.00
by NandishSS »
For each trip, a taxi company charges a fixed fee of $2.00 plus $0.75...
11
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Last post by [email protected]
Tue Sep 05, 2017 10:18 am
terminating decimal
by fruti_yum »
If d = 1/(2^3*5^7) is expressed as a terminating decimal, how many...
11
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Last post by Jeff@TargetTestPrep
Mon Sep 04, 2017 10:30 am
OG 196 (Properties of numbers/exponents)
by DCS80 »
Hi, #196 (OG 13) From the consecutive integers -10 to 10, inclusive,...
8
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Last post by Jeff@TargetTestPrep
Mon Sep 04, 2017 10:15 am
There are a lot of houses such that the numbers of their doo
by Max@Math Revolution »
There are a lot of houses such that the numbers of their doorplates...
5
Last post by Admin1
Sun Sep 03, 2017 3:54 pm
Tough one from Kaplan
by aalradadi »
A dog breeder currently has 9 breeding dogs. 6 of the dogs have...
7
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Last post by YTarhouni
Sun Sep 03, 2017 2:20 pm
Smallest Common Multiple
by deepesh.gupta »
What is the smallest common multiple of two integers which are both...
42
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Last post by danielle07
Sun Sep 03, 2017 1:52 pm
Probability Problem Sets
by theachiever »
A florist has 2A,3B and 4P.She puts two flowers together at random...
5
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Last post by YTarhouni
Sun Sep 03, 2017 1:39 pm
Probablity
by parveen110 »
If 4 fair dice are thrown simultaneously, what is the probability of...
16
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Last post by YTarhouni
Sun Sep 03, 2017 1:24 pm
Difficult Math Problem #104 - Work
by 800guy »
from diff math doc. oa coming when some people answer with...
4
Last post by BTGmoderatorRO
Sun Sep 03, 2017 12:09 pm
If a triangle ABC is there such that BE=EF=FC=3 and DB=GC=2B
by Max@Math Revolution »
If a triangle ABC is there such that BE=EF=FC=3 and DB=GC=2BE, what...
3
Last post by Admin1
Sun Sep 03, 2017 9:53 am
ratios problem
by alltimeacheiver »
In a certain English class, 1/4 of the number of girls is equal to...
7
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Last post by gmatstudent2017
Sun Sep 03, 2017 9:42 am
Help on a Coordiate geometry problem
by crackgmat007 »
Q: The graph of which of the following equations is a straight line...
4
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Last post by Admin1
Sun Sep 03, 2017 8:56 am
2 men and 3 women are lined up in a row. What is the number
by Max@Math Revolution »
2 men and 3 women are lined up in a row. What is the number of cases...
4
EXPERT REPLIES
Last post by Brent@GMATPrepNow
Sun Sep 03, 2017 6:01 am
cube
by Gmatasap »
The entire exterior of a large wooden cube is painted red and then...
3
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Last post by Brent@GMATPrepNow
Sun Sep 03, 2017 5:53 am
Quant question
by phalgun »
Can you please help me solve this Person A and B started in the same...
6
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Last post by danielle07
Sun Sep 03, 2017 2:56 am