?Which of the following is a divisibility rule for 18?
?
A. If a number ends in an even number and is divisible by 3, then it is divisible by 18.
B. ?If a number ends in an even number and the sum of digits is divisible by 9, then it is divisible by 18.
C. ?If last two digits of a number are divisible by 4 and the sum of digits is divisible by 9, then it is divisible by 18.
D. If a number ends in an even number and the sum of digits is divisible by 6, then it is divisible by 18.
E. ?If the sum of the digits of a number is divisible by 3 and 6-rule works, then it is divisible by 18.
Answer: B
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