There are 3 pairs in total 1) 1 and 81 2) 3 and 27 3) 9 and 9
How they're listed. The factors of 20 are 1, 2, 4, 5, 10, 20 The factor pairs of 20 are (20,1)(10,2)(5,4)
81, as it is the highest factor of 81 (81 and 1) and is also a factor of 162 (81 and 2)
2 factor pairs
8 and 4 16 and 2
There are three factor pairs: 68 = 1 x 68 68 = 2 x 34 68 = 4 x 17
Prime numbers have one factor pair. Composite numbers have two or more pairs. (6,8) and (4,12) are two different factor pairs for 48.
No, 81 is odd.
Factor pairs are just the factors of a number listed in a different way. The factors of 20 are 1, 2, 4, 5, 10, 20 The factor pairs of 20 are (20,1)(10,2)(5,4)
factor a^2-b^2
The factor pairs of 6 are : 6 and 1, 3 and 2. The negative equivalents are also factor pairs -6 and -1, -3 and -2.
The factor pairs of 14 are 1*14, and 2*7