Mathematics, 17.10.2019 23:20, Ariellelyn176

Which of these divisibility rules can be applied to determine if 315 is a prime or composite number?
a a number is divisible by 4 if the last two digits are divisible by 4.
b none of these rules can be applied because 315 is a prime number.
c a number is divisible by 9 if the sum of its digits is divisible by 9.
d a number is divisible by 6 if it is divisible by 2 and 3.
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Which of these divisibility rules can be applied to determine if 315 is a prime or composite number?...