# Why can't you get an even number when you add three odd numbers?

because...

odd+odd=even

even+odd=odd

e.g

1+1+1=3

odd+odd+odd=odd

### Why cant even numbers be prime numbers?

A prime number is any number that only has one and itself as factors. By definition even numbers have a factor of two. Therefore even numbers cannot be prime, with he exception of 2.

### Why cant even numbers be prime?

A prime number is any number that only has one and itself as factors. By definition even numbers have a factor of two. However, there is one number that is prime and even: the number 2.

### Why cant a whole number ending in 8 be prime?

Whole numbers ending in 8 are even numbers. All even numbers except for 2 are composite numbers.

### Does the sum of three consecutive even numbers give you an odd or even number?

It will always give an even number, as adding any amount of even numbers always results in an even number.

### Why is it not possible to make a mean of 7 with 3 even numbers?

because in a mean for 7 with three numbers the total of the 3 numbers must be 21 and (even number) + (even number) = (even number) 21 is odd Q.E.D

### Can the difference of two irrational numbers can be rational?

No irrational numbers don't have patterns and cant be expressed as a ratio so you cant even subtract the number. Ex: 22/7 - sqrt(2), you wont be able to find the difference since you cant even put it in a complete number.

### The sum of three consecutive even number is 30. what is the greatest of the three even number?

The numbers would be 8 + 10 + 12.

### Why the even numbers between 20 and 30 cant be primes?

Every even number is evenly divisible by 2.

### What 3 consecutive odd numbers total 270?

The sum of two odd numbers is even and the sum of an even number and an odd number is odd. So the sum of three consecutive odd numbers is odd but 270 is even. Ergo there are no three consecutive odd numbers that sum to 270. Three consecutive numbers that sum to 270 are 89, 90, 91. Three consecutive even numbers that sum to 270 are 88, 90, 92.

### Three addition facts that have sums that are odd numbers?

If you want to get an odd number as a result: * Add any even number with any odd number. * You can also add any three odd numbers, or two even number and an odd number.

### Can there be 3 primes that are cosecutive natural numbers?

As the number 1 is considered a special case and not a prime, there cannot be three consecutive numbers that are prime. Any three consecutive numbers must include at least one even number. With the exception of the number 2, no even numbers are prime.

### Can you add three odd numbers to make 50?

50 is an even number. To get even number by adding odd number of numerical values, ie three numbers that too all of them odd seems not at all possible.

### Is it possible to get a even number as the sum ofm three odd prime numbers?

The sum of three odd numbers will be odd, whether they are prime or not. The sum of three prime numbers can be even as long as one of them is 2.

### Why are two and three the only consecutive prime numbers?

The number 2 is the only even prime number - all other even numbers are divisible by 2.

### Can even numbers be prime numbers?

Only the number 2. All other even number can be divided by three or more numbers: 1, 2 and itself. Prime numbers can only be divided by 1 and itself.

### What number is square your number is even your number has three digits and is a factor of 3?

144, 324, 576 and 900 are even three-digit square numbers that are multiples of 3.

### How do three odd numbers equal an even number?

They don't ! Adding an odd number to two odd numbers always results in an odd number !

### What is a probability of rollong an even number on a number diece?

A die has 6 sides with the numbers 1,2,3,4,5 and 6. Three of those numbers are even. So the probability of rolling an even number is 3 out of 6, or 1 out of 2.

### Why when every three consecutive number are being multiplied it gives you an answer which is an even number?

Any two consecutive numbers must comprise one odd and one even number, so their product must be even. Any three consecutive numbers must include two consecutive numbers so the result still applies.

### How many 3 digit numbers have even no of factors?

878 three digit numbers have an even number of factors. Every factor of a number has a pair, so there ought to be an even number of factors for every number. However, if a pair of the factors are the same number, then there will be an odd number of factors, that is if the number is a perfect square. Assuming three digit numbers are 100 to 999: From 100 to 999, the perfect squares… Read More

### The numbers 2 6 18 54 are examples of what?

Even numbers. A geometric progression where each number is three times the previous number.

### Can the sum of odd number be odd?

If you're adding an odd number of numbers, if two are even and one is odd, you will get an odd number as a result. Three odds are odd. If two are odd and one is even, you have an even result. Three evens are even.

### What 5 odd numbers equal 30 when added and you can use the odd numbers more than once?

There are no 5 odd numbers that when added together make 30. Two odd numbers added together make an even number An odd number plus and even number makes an odd number. From the five odd numbers: Take two of them and add them together getting an even number and four odd numbers Add another of the odd numbers to this even number and you will have three odd numbers Add two of these together… Read More

### What number's cant a prime number end in why?

Other than 2, no prime numbers are even. So prime numbers can't end in even numbers. After 5, no prime number can end in 5. After 5, all prime numbers end in 1, 3, 7 or 9.

### How do you reduce fractions if the numbers are odd?

if both numbers are even you take them both dived by the number they both go into until you cant any more.

### How many outcomes include an even number from the number cube?

On a single roll, three out of the six possible outcomes are even numbers = 50%.

### Why cant a number ending 3 cannt b multiple of 4?

Because the multiples of 4 are even numbers and 3 is an odd number

### -5 is a rational number?

yes, rational numbers are numbers that can be formed as a fraction hence -5/1 even with a minus sign on it irrational numbers are surd numbers, numbers that cant be expressed as a fraction

### What is the probability of getting an even number when throwing a die?

Divide the number of possible even numbers by all the possible numbers. So there are three possible even numbers; 2, 4 & 6. And there are six possible numbers; 1, 2, 3, 4, 5, & 6. So the probability of throwing an even number is 3/6 = .5 .

### Why is the sum of three odd numbers always odd?

Because the sum of two odd numbers is always even and the sum of that even number plus another odd number is always odd.

### What are three consecutive even integers whose sum is negative one hundred and eighty-six?

method -- We need X numbers which are consecutive, so the middle number will be 1/ X of the total. Divide the sum of the numbers by the number of numbers ... in this case divide 186 by 3. The numbers are to be consecutive and even, so subtract 2 from the number go get one of the numbers and add 2 to the number to get the other number. You now have three… Read More

### What are the multiples of three but are square numbers?

Any even exponent of 3 is a square number.

### What 3 conscutive odd numbers add up to 76?

No three odd numbers can add up to an even number.

### What is the sum of two odd and even numbers?

The sum of two odd numbers or two even numbers is an even number. The sum of an odd number and an even number is an odd number.

### Can an even number greater than three be prime why?

No,Because all even numbers except 2 can be divided by 2

### Why are the even numbers except 2 are not prime?

Other even prime contains at least three factors,they are 1, the number itself and 2 . So they are composite numbers.

### Find 3 consecutive even numbers whose sum is 57?

The sum of two evens is even so the sum of any number of evens is even. It is, therefore, impossible for the sum of three even numbers, whether or not consecutive, to be 57, which is an odd number.

### How many ways can the whole number 50 be expressed as the sum of three different prime numbers?

Look at the first 2 of these prime numbers. They cannot be even for then they would be divisible by 2, so not prime. Add them together. Two odd numbers added together make an even. Subtract this even number from 50 (also even) so the third number must be even. There is no way of adding 3 prime numbers together to make an even number.