Which of the following numbers is NOT divisible by 3?

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Question: Which of the following numbers is NOT divisible by 3?

Options:

Correct Answer: 22

Solution:

A number is divisible by 3 if the sum of its digits is divisible by 3. The sum of the digits of 22 (2 + 2 = 4) is not divisible by 3.

Which of the following numbers is NOT divisible by 3?

Which of the following numbers is NOT divisible by 3?

Step 1: Identify the numbers you want to check for divisibility by 3.
Step 2: For each number, break it down into its individual digits.
Step 3: Add the digits together to get a sum.
Step 4: Check if the sum is divisible by 3. You can do this by dividing the sum by 3 and seeing if there is a remainder.
Step 5: If there is no remainder, the original number is divisible by 3. If there is a remainder, it is NOT divisible by 3.
Step 6: In this case, for the number 22, add the digits: 2 + 2 = 4.
Step 7: Check if 4 is divisible by 3. Since 4 divided by 3 gives a remainder, 4 is NOT divisible by 3.
Step 8: Therefore, the number 22 is NOT divisible by 3.

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