=> 4 sin2 30˚ - tan2 60˚ + sec2 45˚ => 4 × (1/2)2 - ( √3/1)2 + ( √3)2 => 1 - 3 + 2 = 0
80, ?, 240, 80, 20, 4
18, 30, 46, 66, 90, ?
95, 103, 122, ?, 193, 245
4097, ?, 4359, 4493, 4629, 4767
250 25 5 ? 0.6 0.3
6 11 32 111 ? 2345 14100
98, 89, 114, 50, 194, ?
110, 156, 212, ?, 354, 440
200 ? 96 38.4 7.68 0
6, 7, 15, 46, 185, ?
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