a. 12 can be expressed as the sum of two odd prime numbers: 5 + 7 = 12.
b. 30 can be expressed as the sum of two odd prime numbers: 11 + 19 = 30.
c. 42 cannot be expressed as the sum of two odd prime numbers.
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a. 12 can be expressed as the sum of two odd prime numbers: 5 + 7 = 12.
b. 30 can be expressed as the sum of two odd prime numbers: 11 + 19 = 30.
c. 42 cannot be expressed as the sum of two odd prime numbers.
Answer:
a. 12 can be expressed as the sum of two prime numbers, 5 and 7.
b. 30 can be expressed as the sum of two prime numbers, 7 and 23.
c. 42 can not be expressed as the sum of two odd prime numbers, as it is an even number.