Question
How many floors are there between O and person who likes
Blue? Study the following information carefully and answer the following questions- Eight persons J,K,L,M,N,O,P and Q live on eight different floors of a building. The ground floor is numbered one and the topmost is numbered eight. Each of them likes a different colours i.e. Black, White, Red, Green, Yellow , Blue, Orange and Brown. Only one person lives between L and the one who likes Black. J lives immediately above O, who lives on an odd numbered floor. The one who likes Orange lives on an even numbered floor but not on floor no. 8. Only two persons live between O and the one who likes Orange. Only one person lives between O and the one who likes Yellow. Neither L nor N lives on floor numbered 1. Only two persons live between J and N. the one who likes yellow does not live on floor numbered 1st . K lives on an even numbered floor and immediately above L. The one who likes Brown lives on an even numbered floor and lives immediately above the person who likes Green. Q lives just below the one who likes Green. L does not like Yellow or Green. Only two person live between the one who likes Blue and the one who likes White. The one who likes Blue does not live on an odd numbered floor. M does not live on an odd numbered floor.Solution
J lives immediately above O and O lives on an odd numbered floor. There are 2 floors between J and N. And N does not live on lowermost floor. (so, we get following possible cases here). Case-1
There are 2 floors between O and one who likes Orange and it is also given that person who likes Orange, does not live on the top most floor. There is only 1 floor between O and yellow. Person who like Yellow does not live on lowermost floor.
K lives on an even numbered floor and immediately above L. And it is also given that L does not like Yellow.
Only 1 floor is between L and Black. One who likes Brown lives on an even numbered floor immediately above the one who likes Green and Q lives immediately below the one who likes Green. It is also given that L does not like Green. (so, case 2(a) and case 4 gets eliminated here).
Only 2 floors are between Blue and White. (so, case 2(b) and case 3 gets eliminated here). One who likes blue lives on an even numbered floor.
M does not live on an odd numbered floor. After filling the remaining data, we get: 
'рдЦреВрдм рд▓рд╛рдн рд╣реЛрдирд╛' рдХреЗ рдЕрд░реНрде рдХреЗ рд▓рд┐рдП рд╕рд╣реА рдореБрд╣рд╛рд╡рд░рд╛ рдХреНрдпрд╛ рд╣реИ?
рдШрд╛рдЯ-рдШрд╛рдЯ рдХрд╛ рдкрд╛рдиреА рдкреАрдирд╛ рдХрд╛ рдЕрд░реНрде рд╣реИ -
- рдирд┐рдореНрдирд▓рд┐рдЦрд┐рдд рдореЗрдВ рд╕реЗ рдХреМрди-рд╕рд╛ рд╡рд╛рдХреНрдп рдЕрд╢реБрджреНрдз рд╣реИ?
рд╢рдмреНрдж тАЬрд░рд╛рдЬрдкреБрддреНрд░тАЭ рдХрд╛ рд╕рдорд╛рд╕-рд╡рд┐рдЧреНрд░рд╣ рдХреНрдпрд╛ рд╣реИ ?
рд╣рд┐рдорд╛рд▓рдп рдХреЗ рдЖрдБрдЧрди рдореЗрдВ рдЙрд╕реЗ рдкреНрд░рдердо рдХрд┐рд░рдгреЛрдВ рдХрд╛ рджреЗ рдЙрдкрд╣рд╛рд░, рдЙрд╖рд╛ рдиреЗ рд╣рдБрд╕ ...
рд╕рдпреБрдВрдХреНрдд рд╡реНрдпрдВрдЬрди рдХреА рдХрд┐рддрдиреА рд╕рдВрдЦреНрдпрд╛ рд╣реЛрддреА рд╣реИ
'рд╕реБрдмрд╣ рд╣реБрдИ рдФрд░ рдЪрд┐рдбрд┐рдпрд╛ рдЙрдб рдЧрдИ'ред рдпрд╣ рдХрд┐рд╕ рддрд░рд╣ рдХрд╛ рд╡рд╛рдХреНрдп рд╣реИ ?
рдЕрдиреБрд╕реНрд╡рд╛рд░ рдХрд┐рд╕реЗ рдХрд╣рд╛ рдЬрд╛рддрд╛ рд╣реИрдВред┬а
"рд╕рд╛рдЧрд░ рд╕реВрдЦ рдЧрдпрд╛ рдЖрдБрд╕реВ рдмрд╣рд╛рддреЗ-рдмрд╣рд╛рддреЗред" рдЗрд╕ рдкрдВрдХреНрддрд┐ рдореЗрдВ рдХреМрди-рд╕рд╛ рдЕрд▓рдВрдХрд╛я┐╜...
рд╣рд┐рдВрджреА рд╡рд░реНрдгрдорд╛рд▓рд╛ рдореЗрдВ рдореВрд▓ рд╡реНрдпрдВрдЬрди рдХрд┐рддрдиреЗ рд╣реЛрддреЗ рд╣реИ ?