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25, 49, 81
To satisfy your criterion, you need the square of an odd number.
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∙ 11y ago1 and 4
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What 2 numbers have LCM of 20 and HCF of 2?
2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.
What are two or more numbers multiplied called?
yes you do because 5 is a factor of 20 and so is 2 and 5x2=10 and 10 is a factor of 20
How do you know that 124510 and 20 are factors of 20?
Becuause when you divide those numbers into twenty, the answers are whole numbers.
What numbers are multiples 5 and factors of 20?
5, 10, and 20 are all multiples of 5 and factors of 20.
What are the common factors that 20 and 27 have without any of them going in to both numbers?
Common factors have to go into both numbers. The only common factor of 20 and 27 is 1.
What numbers are a factor of 20 and also factors of 30?
1, 2, 5 and 10.
If 20 is a factor of a numberwhat other numbers must also be factors of that number?
1,2,4,5,10
What are the square numbers between 1 and 20?
The square numbers between 1 and 20 are 1,4,9 and 16.
What 2 numbers have LCM of 20 and HCF of 2?
2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.
Is there a number with 20 factors?
There are infinitely many numbers with 20 factors. yes there is
What is a number less than 20 and has 3 factors?
4 and 9. Factors of numbers come in pairs which means that every number ought to have an even number of factors. To have an odd number of factors, one factor pair must be a repeated number which means that only square numbers have an odd number of factors. The square numbers less than 20 are 1, 4, 9 & 16 and of these 4 & 9 have 3 factors: 4: 1, 2 & 4 9: 1, 3 & 9
Is 20 a square number or not?
No. Square numbers (or perfect square numbers) are squares of integers. The perfect square numbers are 1, 4, 9, 16, 25, 36 ... 20 is not in the series.
What are the factors of 20 that are not also factors of 12?
5, 10, and 20 are factors of 20 that are not also factors of 12.
Which factors of 20 are prime numbers?
The prime factors of 20 are 2, 2, and 5.
What numbers below 20 have 2 factors?
A number will always have 1 and itself as factors. And thus the only numbers with 2 factors will be prime numbers. The only prime numbers below 20 are 2, 3, 5, 7, 11, 13, 17 and 19, and thus these are the only numbers below 20 that have 2 factors.
How can you use the factors of 20 to evenly divide20?
By definition, the factors of 20 are the numbers that evenly divide 20 with no remainder.
Which whole numbers have square roots between 1 and 20?
All whole numbers between 1 and 400 (=20 square).
