11
103
No three odd numbers can add up to an even number.
The first five odd numbers are 1, 3, 5, 7, and 9. When you add them together, the sum is 1 + 3 + 5 + 7 + 9 = 25. Therefore, the first five odd numbers add up to 25.
48
Odd numbers always add up to be even numbers EX: 1+1=2 5+3=8 101+51=152 7+3=10 (Got the point)
No three odd numbers can add up to an even number.
103
33
15
The first five odd numbers are 1, 3, 5, 7, and 9. When you add them together, the sum is 1 + 3 + 5 + 7 + 9 = 25. Therefore, the first five odd numbers add up to 25.
99
53
An odd number of odd numbers can't add up to an even number.
You cannot do this, because you're taking odd numbers: if you add two odd numbers together, you will get an even number. Take the odd numbers in pairs, so you'll have 3 pairs plus an extra odd number. The 3 pairs make 3 even numbers. You can add up any number of even numbers and get an even number, so you will have an even + odd, which is odd. 30 is an even number, but your result will be odd, no matter what 7 odd numbers you choose.
No. An odd plus an odd is even, and an even plus an odd is odd. Thus, you will always end up with an odd number if you add only three odd numbers together, and 50 is even.
No, because two odd numbers always add together to be an even number, and a even plus an odd number is an odd number, example: 3+1+11=An even number? 3+1=4 4+11=15 Is 15 even? No. 3+1+11= An odd number (15)
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.