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can't we consider { 25, 25 , 25 } and {64 , 9} two sets here.??. it is not mentioned that numbers in sets are different but sets are unique.. if we don not consider {25 , 25 , 25} then obviously 1 is the answer..there are no combination equal to four so all can be eliminated... Thanks
but still i would go with A , bcoz according to the definition of 'set' it is the collection of distinct objects.. so we cant consider duplicated in sets.. thats why IMO its only one set : {64,9} _________________
Working without expecting fruit helps in mastering the art of doing fault-free action !
Hey 4test1, thanks for correcting me, I made the same mistake as ppl did in above posts, however my point of concern was that according to the definition of Set, we cannot consider duplicates in it.
but i m wondering if we consider this restriction , then i don't think we aren't getting any set that fulfills the criteria...
can naybody solve my doubt??
OA please!!! _________________
Working without expecting fruit helps in mastering the art of doing fault-free action !
each line should sum up to 75, and as far as i see there is noone count double m
I agree with the solution given by exi. In fact, there is an explanation here, but they seem to have missed the set #13 above.
That said, 13 (number of different sets) is not even an answer choice. Are we missing anything here? And what is the OA and if any explanation available for it please?
Update: It seems this is a weekly challenge question from Manhattan GMAT, published in GMatters - November 11, 2009 and they posted it here too. I'd be interested in seeing the solution that they come up with (today, I believe).
It seems this is a weekly challenge question from Manhattan GMAT, published in GMatters - November 11, 2009 and they posted it here too. I'd be interested in seeing the solution that they come up with (today, I believe).
Hi guys, My thoughts about this problem: 1) I don't believe it is GMAT problem. Q50/Q51 problems are tricky problems but not time consuming at least to such extent. 2) set is a unique collection of objects. In other words, {25,25,25} is equal {25} under math definition of set. GMAT uses word "list" or "data set" to avoid confusion. By the way, I don't remember any ambiguous GMAT math problem. _________________
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