1, 3, 7, 21 are the distinct factors of 21.
Its factors are: 1 3 7 and 21 Note that 3 and 7 are prime numbers
1, 7 1, 3, 7, 21
The factors of 9 are: 1, 3, 9 The factors of 21 are: 1, 3, 7, 21
The factors of 21 are 1, 3, 7 and 21. The factors of 18 are 1, 2, 3, 6, and 18.
The factors of 21 are: 1, 3, 7, and 21. The factor pairs of 21 are (1, 21) and (3, 7).`1.3,7.21
1, 3, 7, 21 are the distinct factors of 21.
Because 21 is a multiple of 1, 3, 7 and 21.
1/7 + 1/3 = 3/21 + 7/21 = 10/21
1, 3, 7 and 21
The factor pairs for 21 are1 x 21 and 3 x 7
They are: 1, 3, 7 and 21
the factors of 21 are 3,7,1, 21,and -1, -21,-3,-7. the factors of 49 are 1,49,7,7 and -1, -21-7-7.
1, -1, 3, -3, 7, -7, 21, -21 3 and 7 are prime.
The factors of 21: 1, 3, 7, 21.
-21 and 1 -7 and 3 -3 and 7 -1 and 21
Its factors are: 1 3 7 and 21 Note that 3 and 7 are prime numbers