4 out of 10 or 4/10
From 1 to 10 the prime numbers are 2,3,5, and 7.
So, 4 out of the 10 numbers are prime.
Remember that 1 is not a prime number because it does not satisfy the definition of a prime number.
By definition, a prime number is any positive integer that is divisible by exactly two positive integers, itself and 1.
A is increase and B is positive
September 15 2019 sunday