Who is behind QuickerMaths?
I am Vineet Patawari - PGDM (IIM Indore), ACA, B.Com(H). My passion for Mathematics, specially Vedic Maths encouraged me to start QuickerMaths
I believe that if trained properly using powerful tools like Vedic Maths, the immense intellect of human mind can be ignited instantly - find out more
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Recent Comments
A, B and C can do a piece of work in 40, 60 and 120... – 07Feb12
as a night watchman he is not supposed to sleep during the night . as... – 06Feb12
ramlal is a night watchman and he is sleep on duty therefor boss fire him,... – 06Feb12
Dear, It is good..... But I was already given this question on 06-12-2011 at 11.08... – 05Feb12
he rewarded the watchman because watchman saved his life by warning him that the plane... – 05Feb12
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November 4th, 2009 - 09:08
The answers will be all the perfect squares because perfect squares have odd no.s of factors.
November 3rd, 2009 - 14:45
Yes Mohit is correct.
November 2nd, 2009 - 11:45
I tried upto 10, and found that the doors remaining open are the ones which are perfect squares.
So it had to be true for 1000 also.
November 2nd, 2009 - 10:58
@Mohit: can u explain how you got this answer.
November 2nd, 2009 - 10:56
31 : Number of perfect squares between 1 and 1000.