Search found 10392 matches


Re: OG'17 - A sequence of numbers a1a1, a2a2, a3a3,

Hi All, While this is a wordy sequence question, the information is given to us in a logical order, so we just have to get the information on the pad and follow the ‘instructions’ of the sequence to answer the specific question that is asked. We’re told the first two terms of a sequence: 1st term = ...

by [email protected]

Sun Apr 25, 2021 9:14 pm
Forum: Problem Solving
Topic: OG'17 - A sequence of numbers a1a1, a2a2, a3a3,
Replies: 6
Views: 3567

Re: Units digit?

Hi All, We’re told that N = 33^43 + 43^33. We’re asked for the UNITS DIGIT of N. The GMAT would NEVER expect you to calculate that type of incredibly large result, so there MUST be a pattern involved in those numbers. When dealing with large Exponents, it is likely that there will be a repeating pat...

by [email protected]

Sun Apr 25, 2021 9:13 pm
Forum: Problem Solving
Topic: Units digit?
Replies: 5
Views: 2276

Re: if Y is the smallest positive integer (no. properties)

Hi All, We’re told that Y is the SMALLEST positive integer such that 3150(Y) is the SQUARE of an INTEGER. We’re asked for the value of Y. This question is based on a specific Number Property rule involving squares, so while you could potentially ‘brute force’ your way to the correct answer by TESTin...

by [email protected]

Sun Apr 25, 2021 9:12 pm
Forum: Problem Solving
Topic: if Y is the smallest positive integer (no. properties)
Replies: 7
Views: 2838

Re: OG16 - PS 162

Hi All, We’re told that Don was paid $336 for an hourly-rate for a job that he estimated would take a certainly number of hours. However, the job took 4 hours LONGER than estimated, which means he was actually paid $2/hour LESS than his normal hourly-rate for the job. We’re asked for the original nu...

by [email protected]

Sat Apr 24, 2021 7:49 pm
Forum: Problem Solving
Topic: OG16 - PS 162
Replies: 4
Views: 2223

Re: PS - combination

Hi All, We’re told that each participant in an experiment will be referred to with a ‘code’ that is either 1 letter or 2 DISTINCT letters written in ALPHABETIC ORDER. We’re asked for the LEAST number of letters that would be needed to give each of 12 participants a unique code. Since the answers are...

by [email protected]

Sat Apr 24, 2021 7:49 pm
Forum: Problem Solving
Topic: PS - combination
Replies: 8
Views: 5602

Re: If 3 < x < 100, for how many values of x is x/3 the sq

Hi All, We’re told that 3 < X < 100. We’re asked for the number of possible values for X that would make X/3 the SQUARE of a PRIME NUMBER. From the answer choices, we know that there are at least 2 values, but no more than 9 values, that fit what we’re asked for, so we should be able to list them al...

by [email protected]

Sat Apr 24, 2021 7:48 pm
Forum: Problem Solving
Topic: If 3 < x < 100, for how many values of x is x/3 the sq
Replies: 7
Views: 4092

Re: OG 13 -120

Hi All, We’re told that S > 0 and root(R/S) = S. We’re asked for the value of R in terms of S. Typically, when the phrase “in terms of” appears in a question, an Algebraic approach is required. However, this question can be solved rather easily by TESTing VALUES. IF… S = 2, then root(R/S) = 2… meani...

by [email protected]

Sat Apr 24, 2021 7:48 pm
Forum: Problem Solving
Topic: OG 13 -120
Replies: 5
Views: 2062

Re: OG #119

Hi All, We’re told that Terry originally planned to read 90 pages/day to complete a particular reading assignment. However, she was only able to read 75 pages/day at first (for a certain number of days), which left her 690 pages that had to be read in the last 6 days of that original timeframe. We’r...

by [email protected]

Sat Apr 24, 2021 7:47 pm
Forum: Problem Solving
Topic: OG #119
Replies: 6
Views: 2945

Re: Club X has more than 10 but fewer than 40 members.

Hi All, This prompt is wordy, but it gives us information in a logical order (which we can take notes on AS we read): 1) Club X has MORE than 10 members but FEWER than 40. 2) The members can sit with 3 at ONE table and 4 at EACH of the other tables. 3) The members can sit with 3 at ONE table and 5 a...

by [email protected]

Sat Apr 24, 2021 7:46 pm
Forum: Problem Solving
Topic: Club X has more than 10 but fewer than 40 members.
Replies: 4
Views: 5154

Re: Arithmetic - Properties of Numbers: If n = ...

Hi All, We’re told that N = 3^8 – 2^8. We’re asked which of the follow 5 numbers is NOT a factor of N. The GMAT would NEVER require that you calculate that overall value, so there must be a way to ‘simplify’ that equation. Since it includes Exponents and SUBTRACTION of two values raised to the SAME ...

by [email protected]

Fri Apr 23, 2021 2:56 pm
Forum: Problem Solving
Topic: Arithmetic - Properties of Numbers: If n = ...
Replies: 7
Views: 4040

Re: GMAT Official Guide The light in a restroom operates with a

Hi All, This prompt starts us off with a table that includes all of the specific times in which a door is opened between 8:00 and 10:00. We are then told that a light in a restroom automatically turns on for 15 MINUTES every time the door is opened (and if the light is ALREADY ON, then the timer is ...


Re: Ratios & Revenue (OG Quant Review #115)

Hi All, We’re told that a pharmaceutical company received $3 million in royalties on the FIRST $20 million in sales and then $9 million in royalties on the NEXT $108 million in sales. We’re asked by what APPROXIMATE percentage did the ratio of royalties on the first $20 million DECREASE to the ratio...

by [email protected]

Fri Apr 23, 2021 2:55 pm
Forum: Problem Solving
Topic: Ratios & Revenue (OG Quant Review #115)
Replies: 10
Views: 3396

Re: Algebra Statistics

Q171: Hi All, We’re told that apples cost 40 cents each and oranges cost 60 cents each and that Mary selects 10 pieces of fruit (re: some apples and some oranges). The average price of those 10 pieces is 56 cents. We’re asked how many of the oranges Mary must put back so that the average price drops...

by [email protected]

Fri Apr 23, 2021 2:54 pm
Forum: Problem Solving
Topic: Algebra Statistics
Replies: 7
Views: 3227

Re: Four extra-large sandwiches

Hi All, We’re told that 4 extra-large sandwiches of the same size were ordered by M students, where M > 4. The first three sandwiches were EVENLY DIVIDED among the students, but since 4 of the students did not want any of the 4th sandwich, that sandwich was evenly divided among the remaining student...

by [email protected]

Fri Apr 23, 2021 2:54 pm
Forum: Problem Solving
Topic: Four extra-large sandwiches
Replies: 6
Views: 9637

Re: OG -106

Hi All, We’re asked for the SMALLEST possible INTEGER value for N that will make 25^N > 5^12. While the answers to this question are numbers (so we could TEST THE ANSWERS), this prompt is based around some standard Exponent rules, so approaching it with Arithmetic should be fairly quick. The “base” ...

by [email protected]

Fri Apr 23, 2021 2:53 pm
Forum: Problem Solving
Topic: OG -106
Replies: 6
Views: 2047