#Goal:

Given two natural numbers (integers from 0 to infinity), output a number that is not the sum of those numbers, but is a natural number.

#Example solutions (TI-Basic):

• A+B+1

• not(A+B)

#Invalid solutions:

• A+B-1 (for inputs 0,0, it returns -1, which is not natural)

• "ABC" (ABC is not a number)

#Notes:

• The output must always be a sum of two natural numbers (which is actually just a natural number)

• -1, undefined, infinity, NaN and Error messages are not natural numbers. For our purposes, 0 is natural (although not all mathematicians agree).

Goal:

Given two natural numbers (integers from 0 to infinity), output a number that is not the sum of those numbers, but is a natural number.

Example solutions (TI-Basic):

• A+B+1

• not(A+B)

Invalid solutions:

• A+B-1 (for inputs 0,0, it returns -1, which is not natural)

• "ABC" (ABC is not a number)

Notes:

• The output must always be a sum of two natural numbers (which is actually just a natural number)

• -1, undefined, infinity, NaN and Error messages are not natural numbers. For our purposes, 0 is natural (although not all mathematicians agree).

#Goal:

Given two natural numbers (integers from 0 to infinity), output a number that is not the sum of those numbers, but is a natural number.

#Example solutions (TI-Basic):

• A+B+1

• not(A+B)

#Invalid solutions:

• A+B-1 (for inputs 0,0, it returns -1, which cannot be a sum of natural numbers)

• "ABC" (ABC is not a number)

#Notes:

• The output must always be a sum of two natural numbers (which is actually just a natural number)

• -1, undefined, infinity, and Error messages are not natural numbers.

#Goal:

Given two natural numbers (integers from 0 to infinity), output a number that is not the sum of those numbers, but is a natural number.

#Example solutions (TI-Basic):

• A+B+1

• not(A+B)

#Invalid solutions:

• A+B-1 (for inputs 0,0, it returns -1, which is not natural)

• "ABC" (ABC is not a number)

#Notes:

• The output must always be a sum of two natural numbers (which is actually just a natural number)

• -1, undefined, infinity,NaN and Error messages are not natural numbers. For our purposes, 0 is natural (although not all mathematicians agree).

#Goal:

Given two natural numbers (integers from 0 to infinity), output a number that is not the sum of those numbers, but is a natural number.

#Examples (TI-Basic):

• A+B+1

• not(A+B)

#Non Examples:

• A+B-1 (for inputs 0,0, it returns ~1, which cannot be a sum of natural numbers)

• "ABC" (ABC is not a number)

#Notes:

• The output must always be a sum of two natural numbers (which is actually just a natural number)

• ~1, undefined, infinity, and Error messages are not natural numbers.

#Goal:

Given two natural numbers (integers from 0 to infinity), output a number that is not the sum of those numbers, but is a natural number.

#Example solutions (TI-Basic):

• A+B+1

• not(A+B)

#Invalid solutions:

• A+B-1 (for inputs 0,0, it returns -1, which cannot be a sum of natural numbers)

• "ABC" (ABC is not a number)

#Notes:

• The output must always be a sum of two natural numbers (which is actually just a natural number)

• -1, undefined, infinity, and Error messages are not natural numbers.