SET 24 Math Q: 4Prob with OA of GMAT SET

Expert replies

neeraj_99: Senior | Next Rank: 100 Posts; Posts: 36; Joined: Sat Jul 21, 2007 10:55 am; Location: India; Thanked: 1 times

by neeraj_99 » Sun Oct 28, 2007 9:28 pm

4
A shipment of 8 television sets contains 2 black-and-white sets and 6color sets. If 2
television sets are to be chosen at random from this shipment, what is the probability
that at least 1 of the 2 sets chosen will be a black-and-white set?
A. 1/7 B. ¼ C. 5/14 D. 11/28 E. 13/26

Pl. solve the prob. ques...could u find ur ans in any one of the choices? I'm once again puzzled...are there misprinting in GMAT sets? are their OA correct....if not...then sometime it may sack ur confidence...pl. express ur views apart from solving this good prob. thanks;

Hi friends ! Just started GMAT prep. Hope to share thoughts, experience, joy and agony of GMAT prep journey.

Regards; neeraj

Source: Beat The GMAT — Problem Solving | Sun Oct 28, 2007 9:28 pm

samirpandeyit62: Master | Next Rank: 500 Posts; Posts: 460; Joined: Sun Mar 25, 2007 7:42 am; Thanked: 27 times

by samirpandeyit62 » Mon Oct 29, 2007 4:27 am

I get the ans as 13/28, sometimes the OA may be misprinted/wrong
& sometimes ur soln/approach may be wrong

btw what is the OA here.

Regards
Samir

camitava: Legendary Member; Posts: 645; Joined: Wed Sep 05, 2007 4:37 amFollowed by: 5 members; Location: India; Thanked: 34 times

by camitava » Mon Oct 29, 2007 4:47 am

I am also agree with Samir! It should be 13/28.

Correct me If I am wrong

Regards,

Amitava

gmatguy16: Master | Next Rank: 500 Posts; Posts: 124; Joined: Thu Aug 23, 2007 5:11 am; Thanked: 2 times

by gmatguy16 » Mon Oct 29, 2007 3:00 pm

yup ,me too i get 13/28..and i beleive the oa is e..it shud not be 13/26..i guess more likely it was meant to be 13/28..typo

lawalx: Senior | Next Rank: 100 Posts; Posts: 42; Joined: Tue Nov 06, 2007 10:39 am

by lawalx » Sun Nov 25, 2007 2:12 pm

could u guys pls show ur workings

mchen01: Newbie | Next Rank: 10 Posts; Posts: 9; Joined: Sat Nov 24, 2007 3:08 pm

by mchen01 » Tue Nov 27, 2007 7:04 am

Hey, can anyone show how they arrived at 13/28?

Thanks!

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