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eitijan: Master | Next Rank: 500 Posts; Posts: 157; Joined: Sat Jan 30, 2016 5:55 am; Thanked: 1 times

by eitijan » Sat Apr 16, 2016 2:22 am

IMO B

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Source: Beat The GMAT — Data Sufficiency | Sat Apr 16, 2016 2:22 am

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Sat Apr 16, 2016 6:50 am

What is the source of the questions you have posted?
I ask because I don't believe the GMAT would use the term "natural number"
I say this because not everyone agrees on the definition of natural numbers (some include 0 and others don't).
More here: https://en.wikipedia.org/wiki/Natural_number

Also, the term "natural number" appears nowhere in the Official Guide.

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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eitijan: Master | Next Rank: 500 Posts; Posts: 157; Joined: Sat Jan 30, 2016 5:55 am; Thanked: 1 times

by eitijan » Sat Apr 16, 2016 8:32 am

Source: IMS

Here, x cant be zero as 0^0 is not defined.
So can we ignore that case ?

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DavidG@VeritasPrep: Legendary Member; Posts: 2663; Joined: Wed Jan 14, 2015 8:25 amFollowed by: 128 members; Location: Boston, MA; Thanked: 1153 times; GMAT Score:770

by DavidG@VeritasPrep » Sat Apr 16, 2016 9:11 am

eitijan wrote:Source: IMS

Here, x cant be zero as 0^0 is not defined.
So can we ignore that case ?

How to treat 0^0 is a long-running debate, one the GMAT would likely take great pains to avoid: https://mathforum.org/dr.math/faq/faq.0.to.0.power.html

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