They are: 2*7*3 = 42
78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.
-247
Tyey are: 42*43 = 1806
-53
They are: 2*7*3 = 42
78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.
-247
Two (or four) digits added together cannot equal 42. Two-digit numbers multiplied together cannot equal 82.
Tyey are: 42*43 = 1806
2 when multiplied by 21 = 42
258
-53
1 x 42, 2 x 21, 3 x 14, 6 x 7
1 x 42, 2 x 21, 3 x 14, 6 x 7
2 x 3 x 7 = 42
The answer is cuberoot(42) = 3.476, approx.