There are many options of two numbers to be multiplied on the result of getting 90; for example:
The factor pairs of 90 are 1 x 90, 2 x 45, 3 x 30, 5 x 18, 6 x 15, and 9 x 10
(-90,1)(-45,2)(-30,3)(-18,5)(-15,6)(-10,9)(90,-1)(45,-2)(30,-3)(18,-5)(15,-6)(10,-9)
Six of them.
90 and any factor of 90 for example, 10 and 90
1,90,2,45,3,30,18,5,15,6 9,10
60, 72, 84, 90 and 96 have 6 factor pairs.
(90,1)(45,2)(30,3)(18,5)(15,6)(10,9)
(90,1)(45,2)(30,3)(18,5)(15,6)(10,9)
(90,1)(45,2)(30,3)(18,5)(15,6)(10,9)
Yes. Factor pairs are always repeated across pairs since factor pairs are certain kinds of pairs.
factor pair = 90,1factor pair = 45,2factor pair = 30,3factor pair = 18,5factor pair = 15,6factor pair = 10,9
90 = 1 x 90 90 = 2 x 45 90 = 3 x 30 90 = 5 x 18 90 = 6 x 15 90 = 9 x 10
The factor pairs of 28 are :28,114,27,4
Sixteen factor pairs.