221
1 and 11
11 and 1
11 and 11
To find numbers that multiply to give you 231, you can factorize 231 and look for its prime factors. 231 = 3 * 7 * 11 So, the numbers you can multiply to get 231 are 3, 7, and 11.
2 and 11
-11
2 and 11
There are infinite numbers, but 11* 9 is fine.
99
The only prime number that multiplies to 11 is 11.
Among the real whole numbers, you only have two choices: -1 x 11 and 1 x -11