CSAT: Greatest 4-Digit Number Divisible by 18 Quiz

Question

What is the greatest 4-digit number that is exactly divisible by 18?

Accepted Answer

We are asked to find the greatest 4-digit number that is exactly divisible by 18. The greatest 4-digit number is 9999. First, check whether 9999 is divisible by 18: 9999 ÷ 18 = 555.5 Since the result is not a whole number, 9999 is not divisible by 18. So, we move to the nearest smaller multiple of 18. 18 × 555 = 9990 Now check divisibility: 9990 ÷ 18 = 555 (exact division) So, 9990 is divisible by 18 and is the greatest 4-digit number with this property. Answer: 9990 (Option B)

Answer

9972

Answer

9990

Answer

9984

Answer

9966

Options

Explanation

Solution

Step 1: Divide 9999 by 18

Step 2: Find nearest lower multiple

Step 3: Check divisibility

✅ Answer

Question