Four Digits

Number Theory Level 2

Find a Four Digit Number, whose-

For example, if the number is $\overline{xyyz}$ , then we have $2\times x = z$ and $2 \times \overline{xy} = \overline{yz}$ .

Note: $\overline{xy}$ is equal to $10 x + y$ . It is not equal to $x\times y$ .