A special two-digit number is such taht when the sum of its digits is added to the product of its digits,the result is equal to the original two-digit number.
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x+y+xy=10x+y
x+xy=10x
x(1+y)=10x
1+y=10
y=9
x(1+9)=10x
0=0
which means that it is true for any value of X
The number is 10x+9 where x=1,2...9
2 such numbers are 29 and 59
#answerwithquality & #BAL
x+xy=10x
x(1+y)=10x
1+y=10
y=9
x(1+9)=10x
0=0
which means that it is true for any value of X
The number is 10x+9 where x=1,2...9
2 such numbers are 29 and 59
#answerwithquality & #BAL
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