What times what equals 421?

Answer 1

There are infinitely many possible answers.Let A be any number such that 0 < A <= 421 and let B = 421/A

then A*B = A*421/A = 421 and the way in which A and B have been defined ensures that each pair {A, B} is different.

Since there are infinitely many possible value for A, there are infinitely many possible answers to the question.

For example, 2*210.5, 10*42.1

Answer 2

1 x 421, 421 x 1 = 421

• 421 is a Prime number