The sum of an even number and an even number
TRUE. BECAUSE THE SUM OF AN EVEN NUMBER AND AN EVEN NUMBER IS ALWAYS AN EVEN NUMBER
The sum of an odd number and an odd number
FALSE BECAUSE THE SUM OF AN ODD NUMBER AND AN ODD NUMBER IS NOT AN ODDD NUMBER
The sum of a prime number and a prime number
FALSE: COUNTER EXAMPLE: 3 + 5 = 8. 3 IS PRIME AND 5 IS PRIME BUT 8 IS NOT PRIME
None of these are an example of the closure property: FALSE, THE FIRST IS AN EXAMPLE OF CLOSURE PROPERTY.