BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

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Target Test Prep · GMAT

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Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
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40 live hours + 6 months of GMAT OnDemand
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Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

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Sun · 9:30 AM to 12:30 PM ET
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Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
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Target Test Prep GMAT OnDemand

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Expert replies
Source: — Problem Solving |

by DeepakR » Sat Jul 04, 2009 5:29 pm
f(a)=-1/a=-1/2 hence we get a=2.
Similarly, f(ab)=-1/ab=1/6 so ab=-6. Substitute a=2 we get, b=-3
OA = D

-Deepak
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