Some birds are sparrows (I) + Some sparrows are duck (I) ⇒ no conclusion cannot be drawn. Hence, conclusion I will not follow. Some birds are sparrows (I) ⇒ conversion ⇒ Some sparrows are birds (I). [Probable conclusion] ⇒ A. Hence, conclusion II will follow.
168, 164, 155, 139, ?, 78
324 972 486 1458 729 ?
...32 48 96 ? 720 2520
8 12 30 105 ? 2598.75
...18, 54, ? , 1890, 17010, 187110
660, 653, 639, 618, 590, ?
16, 16, 32, 96, ?, 1920
What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
64, 256, 128, 512, 256, ?
45, 58, 84, 123, ?, 240