A number is divisible by another number if it yields a whole number when divided by that number. For example, 8 is divisible by 2 because 8/2 = 4, and 4 is a whole number.
Then, let us verify the options.
• 13860 is divisible by 4?
3465 is a whole number. Thus, 13860 is divisible by 4.
• 13860 is divisible by 7?
1980 is a whole number. Thus, 13860 is divisible by 7.
• 13860 is divisible by 9?
1540 is a whole number. Thus, 13860 is divisible by 9.
• 13860 is divisible by 11?
1260 is a whole number. Thus, 13860 is divisible by 11.