January 22, 2019 January 22, 2019 10:00 PM PST 11:00 PM PST In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one. January 26, 2019 January 26, 2019 07:00 AM PST 09:00 AM PST Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
Author 
Message 
TAGS:

Hide Tags

Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

GMAT Sample Questions and solution tips
[#permalink]
Show Tags
09 Apr 2014, 03:37
Concept tested: Even/Odd number Question:If a is odd and b is even, is ab odd, or even? Answer: xy is even An odd number can be represented as 2n + 1, and an even number can be represented as 2n, where n is an integer.Multiplying 2n + 1 and 2n would yield 4n2 +2n, which is always even, since 2 is a factor of both terms. Mantra: odd number times an even number is always even.
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

GMAT Sample Questions and solution tips
[#permalink]
Show Tags
10 Apr 2014, 03:01
Concept tested: Exponents Question: Calculate (1)273 Answer: 1 –1 raised to any even power is 1 {eg (–1) × (–1) = 1}. –1 raised to any odd power will equal –1 {eg (–1) × (–1) × (–1) = 1}. Since, 273 is an odd number, so (1)273= –1. Mantra: (1) raised to an even power is equal to 1 and (1) raised to odd power is equal to +1
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
11 Apr 2014, 02:22
Concept tested: Exponents and roots Question: ( 7√x)7 = ? a) x49 b) x c) X1/7 d) 1 Answer: x ( 7√x)7 = ( x1/7) 7= x(1/7)* 7 = x Mantra: n√x can be written as x1/n
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
01 May 2014, 03:32
Concept tested: Even/Odd numbers Question: If x and y are both odd integers , what is x/y ? a) Odd b) Even c) Can’t be determined Answer: Can’t be determined If x is divisible by y , then obviously then x/ y is an odd integer. But it is not given whether x is divisible by y or not. So, we can’t determine it with given information. Mantra: Check whether outcome of a calculation is an integer or not , before deciding whether it can be even or odd.
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
02 May 2014, 03:26
Concept tested: Exponents Question: If xy < 0 , then x is a) < 0 b) >0 c) Can’t be determined Answer: < 0 If xy < 0 , then irrespective of the value of y , x is also negative. Case 1 : x=2 , y =3 xy = 23 = 8 > 0 Case 2: x= 2 , y =3 xy = (2)3 = 8 < 0 Mantra: If xy < 0 , x is also negative but it is not true vice versa. i.e if x < 0, then not necessarily xy < 0
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
03 May 2014, 01:50
Concept tested: Unit Digit Question: What is the units digit of (28)(34)(57)? a) 3 b) 0 c) 5 Answer: 0 We need not multiply the entire numbers to find the unit digit. Multiplying 2 and 5 , we get 10 (unit digit ‘0’). Hence this number when multiplied by any nymber any number of times will yield ‘0’ as unit digit. Mantra: When a number with ‘0’ in its unit digit is multiplied with any other number, unit digit will remain same i.e. ‘0’.
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Director
Status: Assisting candidates to get admit in to top global business schools
Affiliations: MBA
Joined: 12 May 2010
Posts: 979
Location: Bangalore
Schools: HEC, Paris
WE 1: 9 Years

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
06 May 2014, 05:09
Concept tested: Factoring Question: Simplify 5^3 + 5^4 + 5^3 + 5^4 a) 625 b) 1500 c) 2500 Answer: 1500 5^3 is common in all terms. Factoring out the common term, 5^3 + 5^4 + 5^3 + 5^4 = 5^3 ( 1 + 5 + 1 + 5 ) = 5^3 ( 12 ) =125 *12 = 1500 Mantra: Look out to find the common term and factor it out to simply calculations and save time.
_________________
General Education Empowering Intellect
Predict your admission chances at Top BSchools
w: https://www.genedmba.com/
m:+91 9164157770 e: info@genedmba.com



Intern
Joined: 10 Sep 2013
Posts: 2
Concentration: General Management, Technology
GMAT Date: 08202014

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
08 May 2014, 01:19
nehasingh1020 wrote: Concept tested: Exponents Question: If xy < 0 , then x is a) < 0 b) >0 c) Can’t be determined
Answer: < 0
If xy < 0 , then irrespective of the value of y , x is also negative.
Case 1 : x=2 , y =3 xy = 23 = 8 > 0 Case 2: x= 2 , y =3 xy = (2)3 = 8 < 0
Mantra: If xy < 0 , x is also negative but it is not true vice versa. i.e if x < 0, then not necessarily xy < 0 The answer should be can't be determined as either x can be negative or y can be negative in which case x is positive. Isnt it?



Manager
Joined: 18 Nov 2013
Posts: 78
Concentration: General Management, Technology

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
17 Apr 2015, 16:09
Quote: Concept tested: Unit Digit Question: What is the units digit of (28)(34)(57)? a) 3 b) 0 c) 5
Answer: 0
We need not multiply the entire numbers to find the unit digit. Multiplying 2 and 5 , we get 10 (unit digit ‘0’). Hence this number when multiplied by any number any number of times will yield ‘0’ as unit digit.
Mantra: When a number with ‘0’ in its unit digit is multiplied with any other number, unit digit will remain same i.e. ‘0’.
that's incorrectsomething wrong with picking up unit digits, you picked up 10th digits to show answer to unit digit, it should be (2 8)(3 4)(5 7) = 8*4*7 == 32 * 7 == 3 2 * 7 = 4 Answer is 4if you multiply (28)(34)(57) == 5425 4
_________________
_______  Cheers
+1 kudos if you like



NonHuman User
Joined: 09 Sep 2013
Posts: 9461

Re: GMAT Sample Questions and solution tips
[#permalink]
Show Tags
11 May 2017, 09:09
Hello from the GMAT Club BumpBot! Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up  doing my job. I think you may find it valuable (esp those replies with Kudos). Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Books  GMAT Club Tests  Best Prices on GMAT Courses  GMAT Mobile App  Math Resources  Verbal Resources




Re: GMAT Sample Questions and solution tips &nbs
[#permalink]
11 May 2017, 09:09






