Multiply two odd numbers Add an even and an odd Subtract an odd and an even
103
No three odd numbers can add up to an even number.
There are no such numbers. The sum of any three odd numbers must be odd. 112 is not.
35
An odd number of odd numbers can not add up to an even number. There fore any 9 (odd) odd numbers can not add up to 50 (even).
35
55
Multiply two odd numbers Add an even and an odd Subtract an odd and an even
37
None. Any two odd numbers add up to an even number.
no
No 5 odd numbers add up to 100. The sum of any two odd numbers is even. The sum of any two even numbers is even. So the sum of any 4 odd numbers must be even. Take that and add an odd number and the sum must be odd. Therefore, the sum of any 5 odd numbers must be odd. 100 is even. In conclusion: The sum of any odd number of odd numbers is odd.
103
No three odd numbers can add up to an even number.
There are no such numbers. The sum of any three odd numbers must be odd. 112 is not.
35