Question

An 11-digit number 7823326867X is divisible by 18. What is the value of X?

• A. 6
• B. 4
• C. 8
• D. 2

Answer 1

Answer:

D. 2

Solution: Calculation : To check the divisibility by 18 we have to check divisibility by 2 and 9. ⇒ 7 + 8 + 2 + 3 + 3 + 2 + 6 + 8 + 6 + 7 + x = 52 + x Now Putting x = 6, 4, 8, 2 We have, ⇒ 52 + 6 = 58 ⇒ 52 + 4 = 56 ⇒ 52 + 8 = 60 ⇒ 52 + 2 = 54 We can see 54 is divided by both 2 and 9 ∴ The correct answer is 2.