Puzzle 28: Cross number
27 February 2019
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From New Scientist #1079, 24th November 1977 [link]
1. Three of these digits are those of 6 across, not necessarily in the same order, and the other one is the sum of the digits of 6 across.
5. A multiple of the square root of 7 down.
6. A perfect cube.
8. A multiple of 23.
9. This is a prime number when reversed.
10. Each digit is greater than the one before.
12. The sum of the digits is 12.
1. The sum of the digits of this number is the same as the sum of the digits of 3 down.
2. The same when reversed.
3. See 1 down.
4. Each digit is greater than the one before.
7. A perfect square.
8. A multiple of 19.
11. A prime number.