The negation of the statement p is denoted by the symbol ~p.
If a particular statement is true for all x, then the negatition of that statement wil state that the statement is false for at least one x.
And also if a statement is true for some x, then the negatition states that the statement is false for every x.
Given statement is "Some contestants on the show can win"
In the sense of negatition statement,
Some contestants win will change to no contestant will win in the negatition form.
Hence the answer is
No contestant on the show can win
Hence the second statement has the value true.
And so the answer is
1. false
2.true
3.false
4.false