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EMPOWERgmat PS Forum Expert  Ask Me Anything about PS and Math
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EMPOWERgmatRichC
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26 Oct 2019, 19:33
Veritas Prep PS Forum Expert  Karishma  Ask Me Anything about Math
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VeritasKarishma
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534
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100 Hardest and easiest questions for PS as of December 2019
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Difficulty: 700Level
Bunuel
14
106757
by:
kobej912
,
22 Jan 2020, 04:57
1958
ER
GMAT PS Question Directory by Topic & Difficulty
Tags:
Difficulty: 600700 Level
,
Difficulty: 700Level
,
Difficulty: Sub600 Level
,
Combinations
,
Mixture Problems
,
Work/Rate Problems
,
Source: GMAT Club Tests
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8
ER
xyz=2, what is the value of x/(xy+x+2) + y/(yz+y+1) + 2z/(zx+2
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
3
308
by:
Kanika3agg
,
29 Sep 2019, 23:20
9
ER
Which of the following is the closest to 11^59^5 – 2(10^5)?
Tags:
Difficulty: 700Level
,
Arithmetic
,
Exponents/Powers
,
Source: Math Revolution
MathRevolution
4
954
by:
bumpbot
,
06 Mar 2019, 19:47
5
ER
What is (1)*(1)^2*(1)^3* *…*(1)^{2019}?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
6
316
by:
saumya2805
,
28 Oct 2019, 14:32
31
ER
Which of the following is the closest value of x such that
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
5
2137
by:
energetics
,
10 Mar 2019, 10:55
9
ER
If 2^{10}≒10^3 and 5^{20}≒10^x, then what is the value of integer x?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
6
361
by:
MathRevolution
,
20 Nov 2019, 01:21
5
ER
A sea food shop sells mackerel. A pack of fifty mackerel, a pack of t
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
3
345
by:
MathRevolution
,
18 Dec 2019, 01:04
23
ER
If xy=x+y , what is x in terms of y?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
14
1394
by:
exc4libur
,
13 Sep 2019, 06:22
13
ER
5 people including A and B line up in a row. How many possible cases a
Tags:
Difficulty: 700Level
,
Algebra
,
Combinations
,
Source: Math Revolution
MathRevolution
4
1035
by:
bumpbot
,
12 Sep 2019, 01:59
5
ER
Alice and Bob were asked to solve the equation x^2+px+q=0. Alice obtai
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
669
by:
AvinashT2303
,
13 Jan 2018, 18:59
8
ER
[x] is the greatest integer less than or equal to x. What is the value
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
2
340
by:
MathRevolution
,
06 May 2019, 02:37
1
ER
There is a gram of sugared water with a% density. If x grams of water
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
2
249
by:
MathRevolution
,
22 Nov 2019, 02:00
5
ER
Find x^4 + 1/x^4 if x – 1/x = 2.
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
2
387
by:
MathRevolution
,
25 Nov 2018, 18:38
11
ER
Thomas bought 12 pencils and erasers altogether and paid $132 for them
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
334
by:
ScottTargetTestPrep
,
26 Dec 2019, 21:15
6
ER
What is the value of
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
301
by:
MathRevolution
,
25 Apr 2019, 01:24
5
ER
If two integers x,y (x>y) are selected from 5 to 4(inclusive), how ma
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
5
1070
by:
bumpbot
,
11 Jul 2018, 23:52
5
ER
What is the sum of the roots of the equation 4^x – 6·2^x + 8 = 0?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
6
515
by:
MathRevolution
,
08 May 2019, 10:44
28
ER
If x2=x+2 , x=?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
9
1480
by:
bumpbot
,
22 Dec 2018, 02:18
1
ER
For x, y satisfying x3/3= y+2/2, x and y always satisfies ax + by =
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
2
216
by:
MathRevolution
,
04 Dec 2019, 02:17
4
ER
If x  7 = √x + √7 , x = ?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
6
1154
by:
shashankism
,
29 Aug 2017, 23:37
4
ER
x, y and z satisfy xy/x+y = 1/3, yz/y+z = 1/5, and xz/x+z = 1/6. What
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
2
210
by:
MathRevolution
,
20 Dec 2019, 00:16
3
ER
What is the value of 1 / (√2+√1) + 1 / (√3+√2) + 1/(√4+√3) + … + 1/(√2
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
3
291
by:
MathRevolution
,
23 Jun 2019, 18:28
12
ER
If x5=√x+√5 , which of followings is true?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
3
1169
by:
bumpbot
,
05 Jun 2019, 01:59
9
ER
Set A of 8 positive integers may have the same element and have 38. An
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
7
1545
by:
bumpbot
,
11 Jul 2019, 12:04
9
ER
A book has 1000 pages numbered 1, 2, 3, …, and so on. How many times d
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
6
632
by:
MathRevolution
,
09 May 2019, 02:44
4
ER
Which of the following are roots of an equation 10x^{2}+x^{1}21=0
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
3
439
by:
MathRevolution
,
11 Nov 2018, 23:06
8
ER
If a>b>0, a2+b2=6ab, (a+b)/(ab)=?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
3
3388
by:
bumpbot
,
06 Jun 2018, 02:14
4
ER
Which of the following is equal to
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
4
837
by:
ScottTargetTestPrep
,
18 Jan 2018, 08:44
14
ER
Which of the following are roots of an equation x2+2x115=0
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
8
2712
by:
jvarmaonninen
,
07 Oct 2019, 07:38
5
ER
The sum of two numbers is 1 and their product is 1. What is the sum o
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
3
274
by:
MathRevolution
,
10 May 2019, 01:11
2
ER
40,105*26*10,112 is the approximation of which of the following? A
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
2
673
by:
MathRevolution
,
01 Mar 2017, 04:49
15
ER
If x^2=2x+1, x^3=？
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
1278
by:
KanishkM
,
18 Feb 2019, 01:30
3
ER
Both roots of the quadratic equation x^239x+a = 0 are prime numbers.
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
403
by:
MathRevolution
,
30 Jun 2019, 18:05
12
ER
How many factors of 330 are odd numbers greater than 1?
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
7
1870
by:
bumpbot
,
08 Sep 2018, 07:36
11
ER
Each of A, B and C represents a onedigit integer. AB and BA are twod
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
5
404
by:
RJ7X0DefiningMyX
,
29 May 2019, 03:18
19
ER
(7^3)a+(7^2)b+7c+d=1045, where a, b, c, and d are integers from
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
8
1359
by:
bumpbot
,
21 Jan 2020, 08:53
19
ER
If the tens digit of positive integers x, y are 6, how many values of
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
7
1933
by:
bumpbot
,
20 Jun 2019, 09:30
11
ER
Which of the following is closer to √0.5+√0.05?
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
6
1225
by:
bumpbot
,
11 Mar 2019, 06:04
8
ER
For a positive integer n, f(n) is defined as 1 + 1/2 + 1/3 + … + 1/n.
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
5
438
by:
vs224
,
20 Oct 2019, 10:15
2
ER
What is the product of all roots of the equation √x+1 = x√x1?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
2
265
by:
MathRevolution
,
12 May 2019, 18:52
ER
a○b is defined as 1/(a+b) – 1/a.
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
5
351
by:
MathRevolution
,
25 Aug 2019, 18:52
18
ER
If x5=x+5 , x=?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
8
1341
by:
bumpbot
,
06 Dec 2018, 13:36
19
ER
If √x √y+√z=0, which of the following is true?
Tags:
Difficulty: 700Level
,
Algebra
,
Exponents/Powers
,
Roots
,
Source: Math Revolution
MathRevolution
8
2538
by:
bumpbot
,
14 May 2019, 00:20
8
ER
If a≠b, and a^2/(ab)=b, which of the following could be a?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
694
by:
bumpbot
,
17 Apr 2019, 09:07
7
ER
A box contains 1 red ball, 3 green balls, 5 yellow balls, 7 blue balls
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
4
520
by:
MathRevolution
,
21 Feb 2019, 01:14
2
ER
For positive integers x and y, xy is defined by xy=(x+y)/xy. If a, b
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
7
965
by:
ashitaporwal
,
19 Dec 2017, 11:12
16
ER
Which of the following cannot be the factor of x4 + 10x3 + 35x2 + 50x
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
4
1948
by:
bumpbot
,
12 May 2018, 11:25
7
ER
What is the solution (x, y) of the following system of equations?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
6
352
by:
Ahmed9955
,
03 Dec 2019, 04:31
14
ER
A store currently charges the same price per pound of salad. If the cu
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
5
1464
by:
bumpbot
,
04 Jun 2018, 03:20
14
ER
x^2 + 4x + 1 = 0. What is the value of x^2 + 1/x^2?
Tags:
Difficulty: 700Level
,
Algebra
,
Source: Math Revolution
MathRevolution
2
343
by:
MathRevolution
,
03 May 2019, 00:16
5
ER
What is the simplified expression for 1/(√1+√2) + 1/(√2+√3) + 1/(√3+√4
Tags:
Difficulty: 700Level
,
Arithmetic
,
Source: Math Revolution
MathRevolution
3
314
by:
MathRevolution
,
07 Apr 2019, 18:43
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