Does between a and b include a and b?.

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rahulsharma2685: Newbie | Next Rank: 10 Posts; Posts: 1; Joined: Fri Jun 10, 2011 11:02 pm

by rahulsharma2685 » Sun Dec 04, 2011 8:38 am

If a question asks that how many numbers are divisible by 3 between a and b.
Should we include a and b to test if they are divisible or not?

Source: Beat The GMAT — Problem Solving | Sun Dec 04, 2011 8:38 am

chieftang: Master | Next Rank: 500 Posts; Posts: 218; Joined: Wed Nov 23, 2011 8:05 pm; Thanked: 26 times; Followed by:4 members

by chieftang » Sun Dec 04, 2011 8:45 am

If the question says "between a and b, inclusive" then a and b should be included. Otherwise, not.

E.g.,

There are two integers between 1 and 4.

VivianKerr: GMAT Instructor; Posts: 1035; Joined: Fri Dec 17, 2010 11:13 am; Location: Los Angeles, CA; Thanked: 474 times; Followed by:365 members

by VivianKerr » Mon Dec 05, 2011 1:52 pm

"between" means the space between only. The question will say "inclusive" if a and b are meant to be considered.

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