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The best way to approach this problem is to test cases: How many perfect squares are less than the integer d? 1) 23 < d < 33 if d = 32, there are 5 perfect squares less than d: 1, 4, 9, 16, 25 if d = 24, there are 4 perfect squares less than d: 1, 4, 9, 16 Insufficient 2) 27 < d < 37 if d = 36, ther...


OP: there is an error in this question. Are you sure it's transcribed correctly? As written there is no correct answer. In any consecutive (or evenly spaced) set, the median is always equal to the average. If we want to change the average *without* changing the median, we must make it a non-evenly-s...

by ceilidh.erickson

Thu May 16, 2019 10:23 am
Forum: Problem Solving
Topic: In a set of five consecutive integers, which of the
Replies: 2
Views: 594

When we're asked to EVALUATE an argument, it's implied that there is currently missing information - UNSTATED ASSUMPTIONS - that would be needed for the argument to logically cohere. Premise: Freewheeler’s sales for May, June, July, and August totaled over 50,000. Conclusion: As a result, Fedora w...


This question is testing MODIFIERS. If we have an "and" linking two nouns (e.g. "Latimer and Edison") followed by a noun modifier (e.g. "who"), it's implied that both nouns are being modified. So in "... Lewis Latimer and Thomas Edison, who became known...", i...


For more on using this strategy for BOLDFACE questions on CR, see: https://www.beatthegmat.com/journalist-every-election-year-at-this-time-the-state-gover-t306075.html https://www.beatthegmat.com/most-of-western-music-since-the-renaissance-has-been-based-t305309.html#823603 https://www.beatthegmat.c...


The goal in any BOLDFACE question is to deconstruct the argument, and determine the role of each statement: - author's conclusion / position - reasoning that supports the author's position - the counterpoint / what others believe - support for the counterpoint - neutral / background information / es...


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This question is testing SUBJECT-VERB AGREEMENT, modifiers, & logical lists. In the dependent clause "... that food (high in whole grain fiber) creates...", the subject is the singular "food" and the verb is "creates." A. fiber creates the energy we need to fight il...


If we want the minimum amount of wrapping paper, we want to know the SURFACE AREA of all surface except the bottom surface. Calculate each:

Top surface area = 25 x 10 = 250
2 sides of 5 x 10 = 2(5*10) = 100
2 sides of 5 x 25 = 2(5*25) = 250

250 + 100 + 250 = 600

The answer is B.


If the scale is 1 in = 15 ft, then the dimensions of the floor = 15x20 ft. https://i.postimg.cc/4K6VcCdg/Screenshot-2019-05-04-17-44-08.png If each tile is 6 in x 6 in, that's 1/2 ft x 1/2 ft square. So every 1 sq feet of floor would take 4 tiles. https://i.postimg.cc/234M53mc/Screenshot-2019-05-04-...


Let's set aside the fact that this is an awful floorplan. How would you find furniture to fit this house?! <i class="em em-joy"></i> If the two wall of the living room are parallel, then the kitchen and the (kitchen + living room + bath) are SIMILAR triangles. Similar triangles always have...

by ceilidh.erickson

Sat May 04, 2019 12:52 pm
Forum: Problem Solving
Topic: In the floor plan of an executive's beach house above
Replies: 2
Views: 1113

This is a COMBINATORICS problem. If we're looking for a prime tens and units digit, we're counting single-digit prime numbers: 2, 3, 5, and 7. Now we need to count the possibilities for each digit. Since we have the constraint that we're looking for all #s 0-1570, we have to be careful, since we can...


One very important piece of advice - DON'T SKIMP ON SLEEP! Sleep is when memory consolidation happens, so if you're staying up late to study without sleeping, you won't hold onto those memories anyway, so it's wasted effort. Sleep deprivation can essentially cause amnesia in the long run, drasticall...

by ceilidh.erickson

Fri Apr 26, 2019 4:37 pm
Forum: Lounge
Topic: Trouble dividing Sleep Eat Play Study Work
Replies: 1
Views: 2111

This question is testing PARALLELISM and MEANING. When we see "... , and prompts..." we know that we're looking for a parallel list: X, Y, and Z. Just note: we don't have to make every verb in the sentence parallel! You might be looking for: ... the surge has clogged air traffic control......


When we have variables with inequalities, we have to make sure that we don't make assumptions about the SIGN, i.e. whether it's positive or negative. If gh < 0 < gk, is g < 0? We definitely can't divide through by g to get h < 0 < k, because if g were negative, the signs would flip to h > 0 > k. The...

by ceilidh.erickson

Fri Apr 26, 2019 3:35 pm
Forum: Data Sufficiency
Topic: If gh < 0 < gk, is g < 0?
Replies: 1
Views: 443

In this divisibility question, we can either TEST CASES or use DIVISIBILITY THEORY. If a and b are positive integers divisible by 6, is 6 the greatest common divisor of a and b? (1) a = 2b + 6 Testing Cases: Case 1: b = 6 a = 2(6) + 6 = 18 the GCF of 6 and 18 is 6 --> yes. Case 2: b = 12 a = 2(12) +...