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March 6, 2008

The Peculiar Number


There is a number which is very peculiar. This
number is three times the sum of its digits. Can you
find the number?

9 comments:

vaibhav said...

27

Madan said...

Let number be XY
sum of the numbers =X+Y
Given 10X+y =3(X+Y)
7x = 2y
x/y = 2/7
So x=2,y=7

Number is 27...

rose said...

hey madan thts right ...
10X+y =3(X+Y)
from where 10 cums

Venkatesan said...

it's 27

vivek said...

27

Swetha said...

the num is 27 for sure......

vikas1419@gmail.com said...

Number is not so peculiar... the all multiples of 9 has such type of peculiarity.. like 45,36,18.... its sum are 9 and is multiple of 9... there are few peculiar numbers nike 4104,1729,91... etc

Anonymous said...

-.-
X is a single digit..
10X + Y = XY

Anonymous said...

it can also be just zero