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
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Oct 13 to Jan 7, 2027

with Chris Peckover

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Tue, Thu · 8:00 to 10:00 PM ET
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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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40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
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  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
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Target Test Prep GMAT OnDemand

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Expert replies
by pappueshwar » Wed Mar 14, 2012 10:03 am
In arranging alphabet letters, CIRCLE, how many times does at least one letter stand between C and C?

A. 180 B. 200 C. 210 D. 240 E. 250

OA IS D
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Source: — Problem Solving |

by Neo Anderson » Wed Mar 14, 2012 10:20 am
TOTAL NO OF WAYS = NO OF WAYS WITH C&C NEXT TO EACH OTHER + NO OF WAYS WITH AT LEAST ONE LETTER B/N C&C
=> NO OF WAYS WITH AT LEAST ONE LETTER B/N C&C = TOTAL NO OF WAYS - NO OF WAYS WITH C&C NEXT TO EACH OTHER
TOTAL NO OF WAYS : 6! / 2! = 360
NO OF WAYS WITH C&C NEXT TO EACH OTHER: 5! = 120
NO OF WAYS WITH AT LEAST ONE LETTER B/N C&C: = 360 - 120 = 240

HENCE D
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