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7 & 11 added together total 18.

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Q: Which two prime number add to make 18?
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What 2 prime numbers add to make 1.32?

When you add two or more prime numbers you will only end up with a whole number and not a decimal number.


What two prime numbers add to make a cube number?

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Two is the only even prime number. When you add an odd number to another odd number, you get an even number. When you add an even number to an odd number, you get an odd number. 91 is an odd number, therefore the answer is 2 and 89.


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