Among the three numbers, X = 188181811881, Y = 881181811818 and Z = 811881188118 which numbers are…
Y and Z only are divisible by 18. Divisibility by 18 requires divisibility by both 2 and 9: all three numbers have digit sum 54, but only Y and Z are even.
Choose your answer
Among the three numbers, X = 188181811881, Y = 881181811818 and Z = 811881188118 which numbers are divisible by 18 ?
Answer and explanation
Correct answer B
Y and Z only are divisible by 18. Divisibility by 18 requires divisibility by both 2 and 9: all three numbers have digit sum 54, but only Y and Z are even.
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