The factor pairs for 77 are (1,77) and (7,11).
The factor pairs of 51 are (1,51) and (17,3)
The difference is between factor pairs and distinct factors. With square numbers, one of the factor pairs will be the same number twice. When listing the distinct factors, that number is only listed once.
The factor pairs of 98 are (1,98), (2,49), and (7,14).
One pair: it's a prime number.
There are two factor pairs of 21: 21 = 1 x 21 21 = 3 x 7
no
Twenty only has three factor pairs. (20,1)(10,2)(5,4)
Three
there is no pair factors of the # seven. seven is a odd and composite #.
Three
Since 7 is a factor of 21, it is automatically the GCF.
23 is a prime number, therefore the only two factors are 1 and 23.
1 and 24 2 and 12 3 and 8 4 and 6
Yes. Factor pairs are always repeated across pairs since factor pairs are certain kinds of pairs.
The factor pairs for 77 are (1,77) and (7,11).
1 x 57 and 3 x 19.