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Quantitative Ability Preparation for GMAT

(217 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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Ricky Khosla
Shared from Quantitative Aptitude on Oct 21, 2019 10:55 PM

How many integers n are there such that 1 < 5n + 5 < 25?

 
Five
Four
Three
Two
One
Please type your answer before submitting.

0 is a whole number not a integer

George
Shared from Factors and Multiples - 2 (GMAT) on Oct 09, 2019 3:51 PM

There are two check posts with rotating spotlights. These two posts are 500 m apart and the spotlights are 100 m high. One spotlight rotates anticlockwise and the other clockwise with speeds of 30o per minute and 45o per minute respectively. Also they flash after intervals of 2 minutes and 7 minutes respectively. At 12`o clock both spotlights focused at the midpoint, joining the bases of the check posts. When will this happen again?

 
2 : 48
1 : 36
3 : 20
3 : 30
3 : 40
Please type your answer before submitting.

The question stem does not mention that the lights flashed when they focused at the mid-point.

Neelabh
Shared from GMAT Mock Test - 7 on Aug 26, 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.

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

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

If = 1, then how many such two-digit numbers can be formed by 'a' and 'm'.

 
4
1
2
6
Please type your answer before submitting.

How 15 and 51 ? Why not any other values ?

Piyush Kukreti
Shared from GMAT Mock Test - 6 on Jul 02, 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.

Your answer is wrong. Please check and correct it.