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Library Reading Room Spots
In the reading room of a library, they are 23 reading spots. Each reading spot consists of a round table with 9 chairs placed around it. There some readers such that in each occupaid reading spot there are diffirent number of readers. If in all there are 36 readers, how many reading spots do not have even a single reader?
Shail
- Sep 4th, 2011
The key here is realizing that the tables that aren't empty each have a DIFFERENT number of readers. There's only one way to do this. The very least number of people you could have at a table is just...
Rawjesh
- Nov 21st, 2010
AS, There are some readers such that in each occupied reading spot there are
different numbers of readers. 1+2+3+4+5+6+7+8= 36 readers so, 8 spots have
different readers. remaining are 23-8= 15. 15 spots are empty.
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Divided by 3D
A number when divided by D leavs a remainder of 8 and when divided by 3D leavs a remainder of 21. What is the remainder left, when twice the number is divided by 3D
viek
- Sep 19th, 2011
ANSWER - Remainder = 3 let number is x,and quotient is A . D is divisor,and R is remainder= 8 then x = A*D + 8 --------------(I) in second situation let quotient is B , 3D is divisor and R is remainde...
prititripathi
- Dec 20th, 2010
No. divided by 3d gives remainder 21 so 21 will b no.next d+8=21d=13now acc.to given condition 21*2/13*3=3remainder=3
