Search found 8 matches
I wish you had provided an OA. However here goes my attempt. Solving this from scratch will be long so following a couple of methods. My first instinct is (E). Because the radius most likely is a factor of a multiple of 8. so 32/X looks the part. This is purely a guess. Now some logic: From the diag...
- by abhijit@prepitt
Fri Jun 16, 2017 12:41 am- Forum: Problem Solving
- Topic: Geometry Problem
- Replies: 2
- Views: 4066
Harvey flipped a fair coin until he got tails, at which point he stopped. If Harvey stopped after no more than three flips, what is the probability that he didn’t get tails until his third flip? A. 1/2 B. 1/3 C. 1/4 D. 1/7 E. 1/8 Here the OA is D My Approach: The question says he didn't get tails...
- by abhijit@prepitt
Sun May 21, 2017 5:04 am- Forum: Problem Solving
- Topic: Probability-Coins
- Replies: 4
- Views: 1858
My bad, I have edited the solution.
(1) 30 ≤ N ≤ 40
(2) 27 ≤ N ≤ 35
Combined range should be an intersection of the two : 30<=N<=35
- by abhijit@prepitt
Sat May 13, 2017 3:31 pm- Forum: Data Sufficiency
- Topic: If F is the prime factorization of N!
- Replies: 3
- Views: 1747
- by abhijit@prepitt
Sat May 13, 2017 3:09 pm- Forum: Data Sufficiency
- Topic: If F is the prime factorization of N!, how many factors in F
- Replies: 1
- Views: 1570
If F is the prime factorization of N!, how many factors in F have an exponent of 1? (1) 30 ≤ N ≤ 40 (2) 27 ≤ N ≤ 35 Source: Magoosh OA: E Lets understand what the question is asking with a simple example: If N=6. N! = 6! = 6*5*4*3*2*1. Prime factorization for this would look something like:...
- by abhijit@prepitt
Sat May 13, 2017 2:59 pm- Forum: Data Sufficiency
- Topic: If F is the prime factorization of N!
- Replies: 3
- Views: 1747
Is Quadrilateral ABCD a Rhombus? 1) Diagonals of ABCD intersect each other at 90 degrees 2) Diagonals of ABCD are equal in dimension Source: www.GMATInsight.com Answer: Option E https://s9.postimg.org/gdtn0qbcb/perpendicular_equal.png Please look at the image above. When you combine both the statem...
- by abhijit@prepitt
Thu May 11, 2017 10:54 am- Forum: Data Sufficiency
- Topic: Is Quadrilateral ABCD a Rhombus? 1) Diagonals of ABCD inter
- Replies: 1
- Views: 1175
If x+2y=a , and x-2y=b, which of the following is an expression for xy? A)2(a+b/a-b) b)2(a-b/a+b) c)1 d)non Need to point out that usually there are 5 choices in the test. None is usually (E). Also double check if the question asks xy or x/y. x+2y = a x-2y = b Add equations: ==> x=(a+b)/2 Subtract ...
- by abhijit@prepitt
Thu May 11, 2017 10:46 am- Forum: Problem Solving
- Topic: help !!
- Replies: 3
- Views: 1428
How to reach someone @ Beatthegmat
Hi,
New member here. Need help in getting in touch with someone at Beat The GMAT. I tried sending a PM, however its stuck in outbox probably because I am a new member.
Hoping someone can help me here.
I look forward to hearing from you,
Thanks
- by abhijit@prepitt
Thu Apr 20, 2017 6:20 am- Forum: Suggestions and Feedback
- Topic: How to reach someone @ Beatthegmat
- Replies: 1
- Views: 2649