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Because it's the seven times table
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∙ 13y ago
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How do know that 7 must be a factor each multiple of 7?
because if it is a multiple of 7 that means that 7 can go in to it evenlyex: 7 factors:1,714:1,2,7,1421:1,3,7,21
LCM with prime factorization of 32 and 40?
The prime factorization of 32 is 2x2x2x2x2 or 25. The prime factorization of 40 is 2x2x2x5 or 23x5. For a number to be a multiple of a given number the multiple must have the entire prime factorization of that number in is. So a multiple of 32 must contain 2x2x2x2x2 or 25 . Likewise a multiple of 40 must contain 2x2x2x5 or 23x5. The least number that this could possible happen with must have 5 factors of 2 and one factor of 5 (the highest exponent on each individual prime factor). Thus the LCM is 2x2x2x2x2x5 or 25x5 Which is 160.
How do you find whether a number is a perfect square by using its prime factors?
In the prime factorisation of the number, each factor must appear an even number of times.In the prime factorisation of the number, each factor must appear an even number of times.In the prime factorisation of the number, each factor must appear an even number of times.In the prime factorisation of the number, each factor must appear an even number of times.
What must be true for two ratio of two measurements to be a conversion factor?
The measurements must be equal to each other.
What are some multiples of 130 that are prime?
By definition, any multiple of 130 must have 130 as a factor. Therefore no such number can be a prime.
How do know that 7 must be a factor each multiple of 7?
because if it is a multiple of 7 that means that 7 can go in to it evenlyex: 7 factors:1,714:1,2,7,1421:1,3,7,21
What is a factor of 40 it is a multiple of both 2 and 5 it is not multiple of 4?
It must be 10.
What is the difference between greatest common factor and least common factor?
The greatest common factor of two (or more) integers is the biggest whole number that divides into each one of them. The least common factor is the smallest whole number that divides into each one of them and must be 1. Very possibly, you meant the least common multiple, however?
LCM with prime factorization of 32 and 40?
The prime factorization of 32 is 2x2x2x2x2 or 25. The prime factorization of 40 is 2x2x2x5 or 23x5. For a number to be a multiple of a given number the multiple must have the entire prime factorization of that number in is. So a multiple of 32 must contain 2x2x2x2x2 or 25 . Likewise a multiple of 40 must contain 2x2x2x5 or 23x5. The least number that this could possible happen with must have 5 factors of 2 and one factor of 5 (the highest exponent on each individual prime factor). Thus the LCM is 2x2x2x2x2x5 or 25x5 Which is 160.
How do you find whether a number is a perfect square by using its prime factors?
In the prime factorisation of the number, each factor must appear an even number of times.In the prime factorisation of the number, each factor must appear an even number of times.In the prime factorisation of the number, each factor must appear an even number of times.In the prime factorisation of the number, each factor must appear an even number of times.
Which 3 square numbers multiply to make 3240?
9720
When you factor a number into its primes 2 is a factor then you know that the last digit must be what?
Even.
What two digit number is a factor of 30 and a multiple of 4?
There is no such number. If a multiple of 4 is a factor of 30, then 4 must also be a factor of 30, but 4 is not a factor of 30 (the factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30), thus no such number exists.
What must be true for a ratio of two measurements to be a conversion factor?
The measurements must be equal to each other.
What must be true for a ratio of 2 measurements to be a conversions factor?
The measurements must be equal to each other.
Is 6 a factor of492 explain how you know?
492 is an even number so it must be divisible by 2. Its digits total a multiple of 3 so it must be divisible by 3. Any even number that is divisible by 3 is divisible by 6. Of course, you can always divide 492 by 6. If it comes out even, it's a factor. (It does.)
How do i know which unit of conversion factor must be in the numerator?
The numerator must contain the unit INTO which you are converting.
