Which of the following is a characteristic of numbers divisible by 7?

They end in 0 or 5
The double of the last digit subtracted from the rest of the number is divisible by 7
They are always even
They are always prime

Which of the following is a characteristic of numbers divisible by 7?

Step 1: Take the number you want to check for divisibility by 7.
Step 2: Look at the last digit of that number.
Step 3: Double the last digit you found in Step 2.
Step 4: Remove the last digit from the original number, leaving you with the rest of the number.
Step 5: Subtract the doubled last digit (from Step 3) from the rest of the number (from Step 4).
Step 6: Check if the result from Step 5 is divisible by 7. If it is, then the original number is also divisible by 7.

No concepts available.