202.643.0727 / info@parallaxprep.com
Expert LSAT, GMAT, GRE, SAT, ACT, Math, and Physics Tutoring & Admissions Essay Consulting
The Official Guide for GMAT Review, 2016 page 22, question 13 page 157, question 35 page 158, question 43 page 169, question 118 page 173, question 143 page 283, question 72 page 286, question 102 The Official Guide for GMAT Quantitative Review, 2016 page 71, question 71 page 72, question 79 page […]
Read MoreTags: GMAT, Math, Question List, Quotient/Remainder
The Official Guide for GMAT Review, 2016 page 20, question 1 page 22, question 15 page 152, question 2 page 154, question 14 page 155, question 22 page 157, question 36 page 157, question 38 page 159, question 46 page 159, question 49 page 162, question 67 page 167, question 100 page 167, question […]
Read MoreTags: Calculation, Estimation, GMAT, Math, Question List
The Official Guide for GMAT Review, 2016 page 22, question 18 page 23, question 23 page 25, question 26 page 26, question 42 page 165, question 93 page 166, question 96 page 167, question 106 page 168, question 108 page 171, question 132 page 172, question 140 page 174, question 151 page 177, question […]
Read MoreTags: GMAT, Math, Number Theory, Question List
A few months ago I wrote some words about qualifiers. These little words — words like “some,” “many,” “most,” “few,” “maybe,” and “probably” — somehow manage to be both often-critical and often-overlooked on standardized tests like the LSAT, the GMAT, and the GRE. I discussed spotting these words and went on to point out the existence and importance of hierarchies among the various qualifiers.
There’s one more twist, though, that we have yet to address…
Read MoreTags: Formal Logic, GMAT, GRE, Logical Reasoning, LSAT, Qualifiers
In each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.
Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.
If you’re taking any test involving geometry, here’s what you need to know about triangles:
Read MoreTags: ACT, Cheat Sheet, Geometry, GMAT, GRE, Math, SAT, Triangles
In each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.
Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.
If you’re taking any test involving geometry, here’s what you need to know about lines and angles:
Read MoreIn each Reference Sheet, I’ll cover, as succinctly as possible, every rule you absolutely must know to solve problems in a single area found on standardized tests.
Learning these rules isn’t a substitute for developing higher-order problem-solving and strategic thinking skills; rather, it’s a necessary precondition and foundation for all of that strategizing to take place. This Reference Sheet lists the minimum requirements to get your foot in the door. It’s the price of admission.
If you’re taking any test involving combinatorics, here’s what you need to know:
Read MoreTags: ACT, Cheat Sheet, Combinatorics, GMAT, GRE, Math, SAT
On the sixteenth night, however, a number of men were executed, and on the seventeenth day the faithful men of the island awoke with their wives to see the judgment.
How many men of the island were adulterers? How did their wives find out?
Before reading this post, please review the riddle in The Island of Women.
Read MoreTags: Apropos of Nothing, Inductive Reasoning, Logic Puzzles
Big news: My middle brother Josh got married today!!! This post is dedicated to him and his new wife Mandy.
Josh’s big news got me thinking about an old riddle I heard first in law school, and I figured that now would be an appropriate time to share it. I don’t know the origin of this riddle, and I’m certain that my recollection is not precisely identical to the original form, but it’s still very challenging and, I think, a lot of fun.
Good luck!
Read MoreTags: Apropos of Nothing, Inductive Reasoning, Logic Puzzles
It’s an ugly, rainy, windy day in Washington and all of my lessons are canceled. I’m going to dig into 10 New Actual, Official LSAT PrepTests and do a logic game to pass the time. Let’s try PrepTest 57, Section 1, Questions 1-5 (10 New LSAT, page 188).
This looks like a relatively straightforward ordering game. The items are G, H, J, K, L, and M. I’ll shorthand the rules as follows:
(1) HG
(2) K-G
(3) M-L
(4) JM or MJ
The repetitions of G between rules 1 and 2 and M between rules 3 and 4 are surely not accidental.
Read MoreTags: Analytical Reasoning, Complete and Accurate Lists, LSAT, Ordering Games, Question Analysis