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What goes in to 5 and 2 evenly?
1. The two numbers are coprime.
What does coprime mean?
Two numbers are coprime if they have unity (1) as their only common factor. Example 1: 17 and 19 - any two prime numbers are also coprime. Example 2: 15 and 64 - neither is a prime, but they have no common factor except. The factorizations are 3x5 and 1x15; and 1 x 64 and 26, respectively.
What are the 2 numbers that you get 13 when you times them but you get 14 when you add them?
As 13 is a prime number only itself and 1 are multiple. 13x1=13 and 13+1=14.
How can you use prime factorization of two numbers to determine whether they are relatively prime?
let's have two numbers a and b and a set of primes (pi) Suppose a = pa pa+1pa+2... and b = pb pb+1 pb+2... If at least one pi in both factorization is in common then the two numbers are not coprime (relatively prime), if none is in common then they are coprime
What is the probability that a random 2 digit number ia a multiple of 7?
There are (99 - 9) = 90 2-digit numbers.13 of them are multiples of 7.The probability is 13/90 = 14.4% (rounded)
