Decide which of the following statements are true and which are false. Briefly explain.
1) If 1=1, then most horses have 4 legs.
2) If 0=1, then 1=1.
3) If 8 is a prime number, then the 7624th digit of pi is an 8.
4) If the 7624th digit of pi is an 8, then 2+2=4.