How to Know if Number Is Divisible by 11

You cant really use modulo division here because you arent keeping track of the number of times you have printed a number. Video Source 0552 mins Transcript.

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A factor is one of two or more numbers that divides a given number without a remainder.

. For example we know that 14237732 can be divided evenly by 4 because 32 4 8. 11 is a prime number. Divide by 4 - If the last two digits divide by 4 then the entire number is divisible by 4.

Once we know what prime numbers are we learn that each number. A multiple is a number that can be divided by another number a certain number of times without a remainder. This number sentence tells us that 20 is a multiple of 5 and is also a multiple of 4.

Multiples and factors are best explained by using a number sentence such as the following. Im trying to write a function that determines if the input is a valid date and for that I need a function that will tell me if an input number is divisible by 4 and at the same time not divisible by 100 this has to do with leap years but Im not supposed to use the special function for that. Divide by 2 - If the last digit in the number is even then the entire number is divisible by 2.

500 is divisible by four because its last two digits are zero. Simply add a counter and place a new line every time that counter is equal to 10. Any number where the only factors are 1 and itself Example.

Applying the rules we know to see if they are met or not helps us to determine if a number is divisible by four. Remember that divide by 2 is the same as cutting something in half. There is no other number other than 1 and 11 you can divide it by that will give you a whole number.

This is what I came up with but I can already see that its not correct. The first video will explain more about primes and how to determine if a number is prime. 339 is not divisible by four because 39 its last two digits is not.

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