The factor pairs of 21 are:1, 213, 7Therefore, the number 21 has two pairs of positive integer factors.
The factor pairs are the length and width of the rectangles.
21,17,3
1 and A
(21,-1)(7,-3)(-21,1)(-7,3)
(1, 63) (3, 21) (7, 9)
The factor pairs of 21 are:1, 213, 7Therefore, the number 21 has two pairs of positive integer factors.
There are two factor pairs of 21: 21 = 1 x 21 21 = 3 x 7
The factor pairs are the length and width of the rectangles.
Factors of 21 are 1, 3, 7, and 21; the factor pairs are (1 x 21) and (3 x 7).
One to one.
1 & 21, and 3 & 7
1 and 21, 3 and 7,
(1, 21) (3, 7)
1,21 3,7
21,17,3
Too many to list.