?% of 320 - 69 = 123
?% of 320 - 69 = 123 => ?% of 320 = 192 => ? = (19200/320) => ? = 60
124, 180, 108, 198, ?, 220
25 54 ? 228 460 924
...72, 97, 147, ?, 322, 447
1, 6, 27, 124, ?, 3906, 27391
...Complete the series choosing the missing number.
110, 99, 86, ___, 54, 35.
10,14,26,42,70,?
18, 37, 60, ?, 120, 157
126 56 ? 12 10 2
...96 89 ? 90 94 91
...3 8 26 93 ? 1985 11940
...