(a) Since, no number is less than 1 on a die.
∴ Getting a number less than 1 on throwing a die is impossible to happen.
(b) When a coin is tossed two outcomes are possible i.e., Head or Tail.
∴ Getting head when a coin is tossed may or may not happen.
(c) A team winning the match may or may not happen because a team can lose the match.
(d) Christmas will be on 25 December is certain to happen.
(e) Since, moon always revolves around the earth.
∴ Today moon will not revolve around the earth is impossible to happen.
(f) A ball thrown up in the air will fall down after some time is certain to happen due to gravity of earth.