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What are two examples of a type of number that has an odd number factor?
There are square numbers (numbers which are a square of an integer), such as 4. It's factors, listed are 1, 2, and 4. All square numbers have an odd number of factors. Then there's 1, which has only 1 factor: 1. All other numbers have an even number of factors. Prime numbers will have only 2 factors (2 is even).
A square number is a number?
yes because square numbers have to be hole numbers to be square
Why do all numbers that aren't square numbers have an even number of factors?
Suppose you have a number n which is not a square. Suppose now that a is a factor of n ie there is some integer b, such that a*b = n. Now since n is not a square, b is not the same as a. Thus for every factor a, there is another factor b ie the factors come in pairs. Therefore, there are an even number of factors.
What number is a square number but not a prime number and is less than 100?
No square number is a prime number, since it has the number you squared as a factor. There are several square numbers less than 100. Just calculate the squares of all numbers, starting with 1, until you reach or pass 100. Then stop.
Why is the number 2 a factor number?
All numbers can be factors.
What are all the square numbers 1-100 and has 32 as a factor?
The only square number in that range that has 32 as a factor is 64.
Do all square numbers have a odd number of factors?
Yes, because each factor must have another factor to go with it, but the square root of a number can have itself as a pair.
What are two examples of a type of number that has an odd number factor?
There are square numbers (numbers which are a square of an integer), such as 4. It's factors, listed are 1, 2, and 4. All square numbers have an odd number of factors. Then there's 1, which has only 1 factor: 1. All other numbers have an even number of factors. Prime numbers will have only 2 factors (2 is even).
Does all numbers have an even number of factor?
No. Any square number has an odd number of factors e.g. 25 = 1, 25, 5
A square number is a number?
yes because square numbers have to be hole numbers to be square
Why do all numbers that aren't square numbers have an even number of factors?
Suppose you have a number n which is not a square. Suppose now that a is a factor of n ie there is some integer b, such that a*b = n. Now since n is not a square, b is not the same as a. Thus for every factor a, there is another factor b ie the factors come in pairs. Therefore, there are an even number of factors.
What are the numbers with square roots that are numbers?
A number with a square root is still a number. So the answer is all of them.
Which number has an odd number of different factors?
All square numbers have an odd number of factors.
What number is a factor to all numbers?
1
What is factor of all numbers?
The number 1.
Which number is a factor of all numbers?
One is.
A factor of all number?
Only the number 1 is a factor of all other integers.
