<span>24: 24, 48, 72, 96, 120,
144, 168, 192, 216, 240, <span>264, 288 ,312, 336, 360, 384,
408, 432, 456, 480, 504, 528, 552, 576, 600, 624, 648, 672, 696, 720, 744, 768,
792, 816, 840, 864, 888, 912, 936, 960, 984, 1008, 1032, 1056, 1080
</span></span>30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450,
480, 510, 540, 570, 600, 630, 660, 690, 720, 750, 780, 810, 840, 870, 900, 930,
960, 990, 1020, 1050, 1080
54: 54, 108, 162, 216, 270, 324, 378, 442, 486, 540, <span>594, 648, 702, 756, 810,
864, 918, 972, 1026, 1080
1080p.</span>
Answer:
The correct matrices are:
Matrix:
7 1 5
1 5 7
5 7 1
all diagonal elements of A^2 are: 7^2 + 1^2 + 5^2
Matrix:
9 18 27
27 -9 18
18 27 9
all diagonal elements of A^2 are: 9^2 + 27*18 + 18*27 or (-9)^2
Matrix:
8 1 6
6 8 1
1 6 8
all diagonal elements of A^2 are: 8^2 + 6*1 + 1*6