Thanks 
Mindgame 1: The Lion and the Unicorn
Answer: Thursday
How: Trial and Error
Thursday is the only day that is true to the statement.
Mindgame 2: The Mystery
Answer:
How:
(Clue #2) The (oldest person - Clue #5) Father and Witness are not the same sex, therefore the witness cannot be the son. In that same statement the Father is also not the Witness.
Which means the Witness is Female. If the Witness is Female than the Helper is Male (Clue #1)
(Clue #3) Youngest person (daughter) is not the same sex as the Victim (the Son) and also not the Murderer (Clue #6) and therefor the Witness.
(Clue #4) The Helper (Father) is older than the Murderer (Mother).
Mindgame 3: Genius Level
Phil's Birthday is Dec 31st.
When he answered the question it was New Years Day. So 2 Days ago (last year) he was 32, but on New Years Day he is 33. In that same year, when Dec 31st comes by again, he will be 34, but in the next year, he will be 35.
The "Woman" is the sister/half-sister/step-sister of the "Daughter" which would make the man, both their "Father".
OR, the man is referred to as "Father" because he is a priest.
(There is not enough info here for a definite answer)
My friend needs to give me 5 apples.
I get plus 5 and she gets minus 5, which means I will have 10 more than her.
