Question

The first and third digits of Q are odd. The second and fourth digits of Q are even. The fourth digit is two times the first digit. The first and second digits add to seven. The second and third digits add to nine. The third and fourth digits add to eleven.

Answer 1

Q=3456
the first and third #s are odd
the second and fourth #s are even
the fourth is twice the first #
the sum of the first and second # equals 7
the sum of the second and third # equals 9
the sum of the third and fourth # equals 11