Question

There are some numbers that can be made into only one array. Find all of these numbers up to 50.

Answer 1

Numbers that can be made into only one array are called prime numbers.

The prime numbers up to 50 are:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43 and 47