Advent calendar 2021
16 December
Each clue in this crossnumber is formed of two parts connected by a logical connective:
and means that both parts are true;
nand means that at most one part is true;
or means that at least one part is true;
nor means that neither part is true;
xor means that exactly one part is true;
xnor means that either both parts are false or both parts are true.
No number starts with 0.
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1A is a palindrome xnor 1D is a palindrome.
1A is greater than 350 nor 1D is less than 150.
3D is odd nand 4A and 2D are equal.
3D is prime xor 5A is odd.
4A is a cube and 2D is a cube.
The sum of the digits of 3D is 2 or the sum of the digits of 5A is 5.
Today's number is 1D.
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