Question
Which consensus mechanism is used by Bitcoin, the first
blockchain-based cryptocurrency?Solution
Bitcoin uses the Proof of Work (PoW) consensus mechanism, where miners solve complex mathematical puzzles to validate transactions and create new blocks. This mechanism ensures security and agreement among participants in a decentralized manner.
900 Â Â Â 90Â Â Â 18Â Â Â ? Â Â Â Â 2.16Â Â Â Â 1.08
78, 80, 84, ?, 108, 140
5 6 14 45 ? 925
...1, 26, 75, 156, 277, ?
138, 140, 152, 174, ?, 248
11, ? 220,  660, 1320,  1320Â
114, 134, 174, 254, 414, ?Â
14 6 4 4 ? 48
...What should come in place of (?) question mark in the following number series.
5, 11, 23, 47, 95, ?
7, 8, 18, 57, 232, ?