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Quantitative Ability Preparation for GMAT

(215 Posts)

This thread is dedicated to preparation for Quantitative Ability section of GMAT. You may share questions related to topics like Arithmetic, Algebra, Geometry & Measurement, Statistics, Modern Mathematics, Data Sufficiency etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Neelabh
Shared from GMAT Mock Test - 7 on 26 Aug, 2019 11:21 AM

Is (X2 + Y2 + Z2) even? [X, Y and Z are integers.]

(1) X, Y and Z are consecutive.
(2) X2 + Z2 is even.

 
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
Please type your answer before submitting.
Neelabh
Posted on 26 Aug, 2019 11:21 AM

The answer provided is wrong but the explanation is correct. The answer should be E.

Utkarsh Vijay
Shared from Algebra - 1 on 19 Aug, 2019 11:31 PM

If (a - 3m )/( 7m - a) = 1, then how many such two digit number can be formed by 'a' and 'm'.

 
4
1
2
6
Please type your answer before submitting.
Utkarsh Vijay
Posted on 19 Aug, 2019 11:31 PM

How 15 and 51 ? Why not any other values ?

Piyush Kukreti
Shared from GMAT Mock Test - 6 on 02 Jul, 2019 12:24 PM

The total cost for Company X to produce a batch of tools is $10,000 plus $3 per tool. Each tool sells for $8. The gross profit earned from producing and selling these tools is the total income from sales minus the total production cost. If a batch of 20,000 tools is produced and sold, then Company X's gross profit per tool is

 
$3.00
$3.75
$4.50
$5.00
$5.50
Please type your answer before submitting.
Piyush Kukreti
Posted on 02 Jul, 2019 12:24 PM

Your answer is wrong. Please check and correct it.

Ankit Kumar
Shared from Algebra - 1 on 03 Feb, 2019 9:37 PM

In a two-digit number, the sum of the digits a and b equals one-fourth the number minus nine. If a is twice of b, what is the value of b?

 
2
4
5
6
8
Please type your answer before submitting.
Ankit Kumar
Posted on 03 Feb, 2019 9:37 PM

Why did you choose the number as 10a b ? If we take the two digit number as 10b a, we can never get the answer . It seems the question is not correct .

Gmat
Shared from Permutation and Combination on 07 Sep, 2018 4:30 PM

A company that ships boxes to a total of 12 distribution centres uses colour coding to identify each centre. If either a single colour or a pair of two different colours is chosen to represent a centre uniquely, what is the minimum number of colours needed for the coding? (Assume that the order of the colours in a pair does not matter.)

 
4
5
6
12
None of these
Please type your answer before submitting.
Gmat
Posted on 07 Sep, 2018 4:30 PM

Not Able to understand this solution plz explain