An 11-digit number 7823326867X is divisible by 18. What is the value of X?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 2.
Given that
7823326867X is divisible by 18
Concept used
Divisibility rule of 18 : A number is divisible by 18 if it is divisible by two and nine.
Calculation
The possible value of X is an even digit number divisible by 2
The sum of digits of given number = 7 + 8 + 2 + 3 + 3 + 2 + 6 + 8 + 6 + 7 + X = 52 + X
For divisible by 9, the value will be 2
Hence, the given number is divided by 18 when X = 2