Puzzles- contd

Quote:

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Originally Posted by NM

vendikkai innum saapadanum-pOla

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Yes! Lots of it! Try different reasoning ! :lol:

NM: (n+1)x(n+3) = [(n+2) -1] x[(n+2) +1 ]
= [ (n+2)^2 - 1 ]

Does this give you a clue? :)

Quote:

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Originally Posted by rajraj

NM: (n+1)x(n+3) = [(n+2) -1] x[(n+2) +1 ]
= [ (n+2)^2 - 1 ]

Does this give you a clue? :)

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hi uncle -
are you saying its wrong?
I thought the sequence should be
3, 8, 15, 24, 35, 48, 63,80, 99, 120 etc......
so the number that's odd is 25 :(

Quote:

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Originally Posted by NM

Quote:

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Originally Posted by rajraj

NM: (n+1)x(n+3) = [(n+2) -1] x[(n+2) +1 ]
= [ (n+2)^2 - 1 ]

Does this give you a clue? :)

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hi uncle -
are you saying its wrong?
I thought the sequence should be
3, 8, 15, 24, 35, 48, 63,80, 99, 120 etc......
so the number that's odd is 25 :(

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I did not say it was wrong! I asked for different reasoning! You have it in the series you gave! What is common to those numbers? :) To make it plain what is the relationship between 25 and 24 ? :)

oooooh! appadiya - its always (the perfect square of a number - 1) .... sorry - didn't quite understand was was required.

(0+2)^2 - 1 = 3
(1+2)^2 - 1 = 8
(2+2)^2 - 1 = 15 etc

ippO naan elementary-thaana illa foundtaion-a? :lol: :lol:

Quote:

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Originally Posted by NM

ippO naan elementary-thaana illa foundtaion-a? :lol: :lol:

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I will tell you after ten more puzzles! :lol: A professor has to give enough tests before awarding a grade ! :lol:

You always try for a simple solution ! :)

Another simple one with numbers ( 4x4 matrix of 16 numbers):


3 7 2 6

4 1 5 8

6 4 5 3

5 6 x 1


What is x ?

6.
Both row-wise and column-wise the sum is 18.
ivlO semipleA kuduthirukka vEndaam.
naan play school ku eligibleA?

Quote:

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Originally Posted by GP

ivlO semipleA kuduthirukka vEndaam.

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Stress relief ! :lol:

For the clock puzzle,

The repairman has put minute hand on the place of seconds hand.