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To calculate whether a number is a multiple of 7, double the last digit and subtract it away from the rest of the number. If this following number divides by 7 without a remainder, then the number is divisible by 7. Continue the process if necessary.
In this instance, 100 - (1 x 2) = 98/7 = 14. 1 - (4 x 2) = -7/7 = -1
Therefore, 1001 is a multiple of 7.
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Is 1001 a composite number or prime number?
1001 is not prime. 1001 = 7 * 11 * 131001 is equal to 7 x 11 x 13, so it is composite.
What is the prime factorization 1001?
As a product of its prime factors: 7*11*13 = 1001
How do you know if a number is divisble by 7?
just see if it is a multiple of 7 or u can divide the digit by 7 to get that answer and if u don't u know that it is not a multiple of 7
What does 135 over 1001 simplify to in lowest terms?
7 * 11 * 13 = 1001 3 * 3 * 3 * 5 = 135 135/1001 is the lowest term
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
