If the 4-digit number x67y is exactly divisible by 9, then the least value of (x + y) is
_____.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 5.
Divisibility rule of 9: If the sum of the digits is divisible by 9, then the number is divisible by 9
According to the question;
⇒ x + 6 + 7 + y = 9 or 18 or 27...
Now least possible sum
⇒ x + 6 + 7 + y = 18
⇒ x + y + 13 = 18
⇒ x + y = 5