Cross-number Puzzle

Logic Level 3

Fill in the blank boxes with digits from 0 to 9 by using the clues below. Once completed, combine the digits in the golden frames to make up a 4-digit prime number. Enter that prime as the solution, and you win!

Down	Across
1. Laika, the "space dog", was sent out of Earth in 19__ .	2. The number of chromosomes in each human cell

3. Infinity is between Cancer and then rotated by 90

^\circ

4. Half of the surface area of

3\times 5\times 7

cuboid

5. The number of ways Teen Titans can get in line distinctly

6. The prime

x

solution of diophantine equation:

x^2 = 2y^4 -1

7. The least 2-digit composite number in a form of

2^n + 1

8. -70

^\circ

C = __ K.

The answer is 4079.

1 solution

Michael Mendrin
May 31, 2018

$\begin{array} { | r | r | r | r | } \hline {5} & {X} & {4} & {6} \\ \hline {7} & {1} & {X} & {\infty} \\ \hline {X} & {2} & {3} & {9} \\ \hline {2} & {0} & {3} & {X} \\ \hline \end{array}$

4079 is the only prime that can be made with those digits

3 down was really cryptic. The astrological sign for Cancer is

Great solution! You win! Though I was aiming for 689, where infinity is flipped 90 degrees. :)

Worranat Pakornrat - 3 years ago

Oh, you're right, it should have been 689, wasn't reading carefuly enough.

Michael Mendrin - 3 years ago

Cross-number Puzzle

The answer is 4079.

1 solution

0 pending reports