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Hi Sri, The question that you linked (below), uses a different set of Number Properties and can be solved with a bit of brute-force calculations. My approach follows the question: ----------------- Which of the following numbers is a perfect square? A) 1266 B) 1444 C) 2022 D) 4034 E) 8122 OA: B ---...

by gmattesttaker2

Sun Jun 29, 2014 4:27 pm
Forum: Problem Solving
Topic: To find the perfect square
Replies: 9
Views: 3892

Hi Sri, The description at the top of the table reads "Seasonally adjusted changes from the PRECEDING MONTH", which means that the number in the box is the percent increase/decrease in price of an item relative to the prior month. For question 2, the CPI-U for electricity in July was 0.5; this mean...


Hi Sri, This IR question is based on one particular graphing concept: when you draw a diagonal line on a graph, you can draw a right triangle with THAT diagonal line as its hypotenuse. This prompt tells us that we're dealing with a square that has an area of 25, so it's side lengths all equal 5. Wi...


Hi Sri, This is more of a "concept" question that a "calculation" question, although you do have to do some calculations to find the correct answer. The way that you "saw" how E wasn't a perfect square is likely the same way that you knock out other answers. Here's how… Consider answer D: 2509…...

by gmattesttaker2

Sat Jun 28, 2014 11:47 am
Forum: Problem Solving
Topic: To find the perfect square
Replies: 9
Views: 3892

http://s10.postimg.org/5k1s4jfz9/Circle.jpg Points P, Q lie on the circle with center O. What is the value of S ? a) 1/2 b) 1 c) 2^(1/2) d)3^(1/2) e) (2^1/2)/2[/img] Here's one approach: http://s16.postimg.org/rb5zs4029/angles_in_a_semicircle.jpg So, s = 1 Answer: B Cheers, Brent Hello Brent, Thank...

by gmattesttaker2

Wed Jun 25, 2014 2:30 pm
Forum: Problem Solving
Topic: Corodinate Geom PS
Replies: 8
Views: 2156

Standard Deviation of 10 volume measurements

Hello, Can you please help with this: The Department of Environmental Protection measured the volume of water in 10 similarly sized reservoirs in State X and found that the standard deviation of their volumes at the start of the year was 4 million cubic gallons. Was the standard deviation of those 1...

by gmattesttaker2

Mon Jun 23, 2014 7:29 am
Forum: Data Sufficiency
Topic: Standard Deviation of 10 volume measurements
Replies: 2
Views: 1269

If tuvw = 108, and t, u, v, and w are all positive integers

Hello,

Can you please tell me how to solve this:

If tuvw = 108, and t, u, v, and w are all positive integers such that t > u > v > w, what is the greatest possible value for t - w?

A) 1
B) 16
C) 17
D) 18
E) 19

OA: 17

Thanks a lot,
Sri

by gmattesttaker2

Mon Jun 23, 2014 7:08 am
Forum: Problem Solving
Topic: If tuvw = 108, and t, u, v, and w are all positive integers
Replies: 3
Views: 3205

If 0 < a < b, is c < 0?

Hello, Can you please tell me how to solve Statement 2: If 0 < a < b, is c < 0? 1.cb < ca 2.|c| > 1 OA: A 1) Since b > a and given cb < ca => c[spoiler] < 0 - Sufficient.[/spoiler] 2) |c| > 1 => c > +/- 1 => c > 1 or c > -1 However, I was not sure how to prove from here that 2 is in-sufficient . Can...

by gmattesttaker2

Mon Jun 23, 2014 7:01 am
Forum: Data Sufficiency
Topic: If 0 < a < b, is c < 0?
Replies: 3
Views: 2432

Hello, Can you please assist with this: a is the hundreds digit of the three digit integer x, b is the tens digit of x, and c is the units digit of x. a = 2b = 4c, and a > 0. What is the difference between the two greatest possible values of x? A) 124 B) 297 C) 394 D) 421 E) 842 OA: 421 Thanks a lo...

by gmattesttaker2

Sun Jun 22, 2014 9:14 pm
Forum: Problem Solving
Topic: a is the hundreds digit of the three digit integer x
Replies: 2
Views: 1499

x^3 < x^2 Describe the possible values of x

Hello, For the following: x^3 < x^2. Describe the possible values of x. Is this correct? x^3 < x^2 => x^3 - x^2 < 0 => x^2(x - 1) < 0 Since x^2 > 0 => x - 1 < 0 => x < 1 - I x^2 > 0 = sq. root (x^2) > sq. root (0) => +/- x > 0 => x > 0 or -x > 0 => x > 0 or x < 0 - II However, from I and II, I was n...

by gmattesttaker2

Sun Jun 22, 2014 8:56 pm
Forum: Problem Solving
Topic: x^3 < x^2 Describe the possible values of x
Replies: 3
Views: 1571

a is the hundreds digit of the three digit integer x

Hello, Can you please assist with this: a is the hundreds digit of the three digit integer x, b is the tens digit of x, and c is the units digit of x. a = 2b = 4c, and a > 0. What is the difference between the two greatest possible values of x? A) 124 B) 297 C) 394 D) 421 E) 842 OA: 421 Thanks a lot...

by gmattesttaker2

Sun Jun 22, 2014 8:27 pm
Forum: Problem Solving
Topic: a is the hundreds digit of the three digit integer x
Replies: 2
Views: 1499

Hello Brent, Thanks for the explanation. Suppose we have a right angled triangle where we are given the value of the hypotenuse only and are asked to determine the value of the other two sides, is it possible to determine those values? For example, if the hypotenuse of a right triangle is 5, then I...

by gmattesttaker2

Sun Jun 22, 2014 8:21 pm
Forum: Data Sufficiency
Topic: Area of Right angle Triangle (DS)
Replies: 5
Views: 5707

What is the area of right triangle XYZ? (1) Side YZ is 9 inches long. (2) Side XZ is 15 inches long. Target question : What is the area of right triangle XYZ? KEY CONCEPT: Area of triangle = (1/2)(base)(height) So, to answer the target question, we need lengths of BOTH the base AND the height. Stat...

by gmattesttaker2

Sun Jun 22, 2014 6:04 pm
Forum: Data Sufficiency
Topic: Area of Right angle Triangle (DS)
Replies: 5
Views: 5707

During the 31-day month of May, a tuxedo shop rents

Hello, Can you please tell me how to solve this: During the 31-day month of May, a tuxedo shop rents a different number of tuxedos each day, including a store-record 55 tuxedos on May 23rd. Assuming that the shop had an unlimited inventory of tuxedos to rent, what is the maximum number of tuxedos th...

by gmattesttaker2

Sun Jun 22, 2014 5:34 pm
Forum: Problem Solving
Topic: During the 31-day month of May, a tuxedo shop rents
Replies: 2
Views: 2890

Jess is running her first ultramarathon (100 miles) with her

Hello,

Can you please assist with this?

Thanks a lot,
Sri

OA: [spoiler]Miles Kerry is ahead: 8
Miles Jess finishes ahead: 3[/spoiler]