7 ⇒ 7 × 7 = 49 – 1 = 48 Similarly, 12 ⇒ 12 × 12 = 144 – 1 = 143 Hence, option A is correct.
362 452 550 656 770 892 ?
30, 42, 54, 66, ?, 90
7, 6, 10, 27, 104, ?
60 61 57 66 ? 75 39
96, 144, ?, 324, 486, 729, 1093.5
86, 127, ?, 209, 250, 291
55, 71, 119, 199, 311, ?
55 56 52 61 ? 70 34
?, 15, 45, 225, 1575, 14175
124, 180, 108, 198, ?, 220
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