Search found 18 matches
Geometry question
I saw this question on Reddit and found it interesting. I think answer should be A.
- by henilshaht
Sun May 10, 2020 9:42 am- Forum: GMAT Math
- Topic: Geometry question
- Replies: 2
- Views: 11543
Help needed in improving verbal score quickly
Hi, I have my GMAT in 20 days. I prepared for 2 months, and have finished all the questions from OG books. I took my first official mock today, and I got a horrible score of 590. And the biggest worrying thing was that it was Q51 V19. I have solved all the SC and CR questions from the OG. And I was ...
- by henilshaht
Mon Feb 17, 2020 1:06 pm- Forum: GMAT Verbal & Essays
- Topic: Help needed in improving verbal score quickly
- Replies: 2
- Views: 7543
Thanks Jay for sharing this. I can figure out that KO = 8, MO = 4 and NO = 6. Similarly, KN = 10. But how do I find JS? https://i.postimg.cc/pyJVsVpN/pt-img2.png In the diagram above, \(∠L = ∠M = 90°, KL = 4, LM = 8, MN = 10,\) and \(JN = JK = 13.\) What is the area of \(JKLMN?\) A. 92 B. 96 C....
- by henilshaht
Wed Dec 18, 2019 6:25 am- Forum: Problem Solving
- Topic: In the diagram above, \(∠L = ∠M = 90°, KL = 4, LM = 8,
- Replies: 2
- Views: 841
Let's assume the traffic from R to S is x and traffic from S to P is y. Now, we know the inward traffic at P is 1200. So, 1200 = 800 + y y = 400. At any point, inward traffic will be equal to the outward traffic. So, using that approach at S, we get the following equation Inward traffic at S = Outwa...
- by henilshaht
Sun Dec 15, 2019 10:50 am- Forum: Problem Solving
- Topic: The figure above represents a network of one-way streets.
- Replies: 3
- Views: 1127
We are given that w = 2 when v = 1. So, \(2 = \frac{p}{\sqrt[t]{1}}\) Since \(\sqrt[t]{1}\) is always going to be 1, we now know the value of p as 2. Now, if w = 1/2 when v = 64 \(\frac{1}{2} = \frac{2}{\sqrt[t]{64}}\) This gives us values of$$\frac{1}{\sqrt[t]{64}} = \frac{1}{4}$$ . So, we know tha...
- by henilshaht
Sun Dec 15, 2019 9:02 am- Forum: Problem Solving
- Topic: In the formula w = \frac{p}{\sqrt[t]{v}} , integers p and t
- Replies: 2
- Views: 986
There are 4 different candles and she has to choose 2 out of them.
So, total combinations = $$_4C_2$$ = 6
Similarly, she has to choose 8 out of 9 flowers.
So, total combinations = $$_9C_8$$ = 9
Finally, the total grouping for candle + flower will be 9 * 6 = 54
- by henilshaht
Sun Dec 15, 2019 8:44 am- Forum: Problem Solving
- Topic: Claudia can choose any two of four different candles and any
- Replies: 3
- Views: 902
Typically, I take some simple numbers to work on the percentage problems: let's say cost c = 100 the selling price will be = 100 + 40% of 100 = 140 After a 20% discount, the selling price will be = 140 - (20% of 140) = 140 - 28 = 112 So, the new selling price of 112 is 12% more than the cost price o...
- by henilshaht
Sun Dec 15, 2019 8:37 am- Forum: Problem Solving
- Topic: A merchant bought an item at a cost of c dollars and marked
- Replies: 3
- Views: 839
Instead of writing the equations, I find the following approach to be time-saving: We know that if we exchange the hundred and the unit digit, the new number is 99 less than the original. With this info, let us try the options: A. 944 New number: 449 944-449 > 99 B. 449 New number: 944 449-944 < 99 ...
- by henilshaht
Fri Dec 13, 2019 5:33 am- Forum: Problem Solving
- Topic: N is a 3-digit positive integer. The sum of all 3 digits of
- Replies: 2
- Views: 742
Editing the answer
I took simple numbers to work on this one: AB = 90, AD = 110 => Area of rectangle = 9900 After increasing AB by 10% and decreasing AD by 10%, AB` = 99, AD` = 99 => Area of a square = 9801 So the area reduced by 10%. Sorry, I made a small mistake in the above example. In this scenario, the area has ...
- by henilshaht
Fri Dec 13, 2019 5:18 am- Forum: Problem Solving
- Topic: In rectangle ABCD, as shown in the figure, the length of lin
- Replies: 3
- Views: 811
Let's call the length of the bigger rectangle L, the width of the bigger rectangle W And the length of one of the smaller rectangle l, the width of one of the smaller rectangle w. AD = BC => w + w + w = l + l + l + l => 3w = 4l => w = 4l/3 Similarly AB = CD = l + w = l + 4l/3 => 7l/3 Area of the big...
- by henilshaht
Thu Dec 12, 2019 9:53 am- Forum: Problem Solving
- Topic: The figure shows rectangle ABCD which consists of 7 congruen
- Replies: 2
- Views: 739
I took simple numbers to work on this one:
AB = 90, AD = 110 => Area of rectangle = 9900
After increasing AB by 10% and decreasing AD by 10%,
AB` = 99, AD` = 99 => Area of a square = 9801
So the area reduced by 10%.
- by henilshaht
Wed Dec 11, 2019 5:42 am- Forum: Problem Solving
- Topic: In rectangle ABCD, as shown in the figure, the length of lin
- Replies: 3
- Views: 811
The important thing is to observe the cycle of the unit digits with 2:
$$2^1 = 2$$
$$2^2 = 4$$
$$2^3 = 8$$
$$2^4 = 16$$
$$2^5 = 32$$
$$2^6 = 64$$
$$2^7 = 128$$
So there is a cycle for unit digits of 2,4, 8 and 6.
In this case, 16*4 = 64, so the unit digit for $$2^{67}$$ will be same $$2^3$$
- by henilshaht
Sun Dec 08, 2019 8:20 am- Forum: Problem Solving
- Topic: If \(S_n = 2^n\), what is the unit's digit of \(S_{67}?\)
- Replies: 2
- Views: 656
Here, the shortest path will have a length of 5. And in every solution, one needs to go UP 3 times and RIGHT 2 times.
One of the solutions will be: UUURR
Total paths will be:
$$\frac{5!}{3!\cdot2!}$$ = 10.
This is because U is repeated 3 times and R is repeated 2 times.
- by henilshaht
Sun Dec 08, 2019 7:36 am- Forum: Problem Solving
- Topic: Pat will walk from intersection X to intersection Y along a
- Replies: 4
- Views: 1552
First I will convert the unit from mm to inches =>
$$\left(\frac{21}{16}\times\ 25.4\ =\ 33.3\right)$$
So the answer has to be more than 33, and the only option which satisfies this choice is E. $$$$
- by henilshaht
Sun Dec 08, 2019 7:21 am- Forum: Problem Solving
- Topic: The figures above show a hexagonal nut that has a width of
- Replies: 2
- Views: 783
There are 3 different positive integers. If their average (t
There are 3 different positive integers. If their average (the arithmetic mean) is 8, what are their values?
1) The largest integer is twice the smallest integer.
2) One of them is 9.
- by henilshaht
Sat Dec 07, 2019 6:58 am- Forum: Data Sufficiency
- Topic: There are 3 different positive integers. If their average (t
- Replies: 1
- Views: 1029