3,5,7,9,11
The first statement is incorrect 1 is an odd integer
Looking at the second statement
1 + 2n where n is the position
Lets look at the 4th spot
1 + 2*4 = 1 + 8 = 9
9 is in the 4th spot
Check 5th
1 + 2*5 = 1+10 = 11
This is a true statement
The 3rd statement is incorrect because 1 is a positive odd integer
The 4th statement is correct because it is the positive odd integers greater than 1
The 5th statement is incorrect. 9 is not a prime number
Statements that are correct: 2, 4