Source: Official Guide for GMAT Review 2016 Data Sufficiency ; #81

1

What is the value of integer n?

What is the value of integer n?

2 Explanations

1

Trinity Sheppard

Why couldn't I have plugged my results in from the quadratic formula? When I did that I only got one working number.

Feb 22, 2018 • Comment

Sam Kinsman, Magoosh Tutor

Using the quadratic formula to test statement 1 should give you two answers. Keep in mind that you have to set the equation equal to zero - so in this case, you'd have n^2 + n - 6 = 0. If you plug that into the quadratic equation, you will get two answers: 2 and -3

Mar 1, 2018 • Reply

1

Gravatar Mike McGarry, Magoosh Tutor

Aug 18, 2015 • Comment

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Official GMAT Material

Official Guide for GMAT Review 2016

Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

Nova's GRE Prep

Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 6.3 Data Sufficiency

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