in a three digit number the 100 digit is twice the 10 digit while the unit digit is thrice the 10 digit answer the sum of its digit is 18. find the number.
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let digits be x*100y*10z
x=2y,3x=6y,y=0.5x
z=3y,2z=6y
3x=2z,z=1.5x
x+y+z=18
x+0.5x+1.5x=18
x=6
y=3
z=9
No.=639
x=2y,3x=6y,y=0.5x
z=3y,2z=6y
3x=2z,z=1.5x
x+y+z=18
x+0.5x+1.5x=18
x=6
y=3
z=9
No.=639
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