# How do you decide if a two digit number is a multiple of a one-digit number?

If the number is even, it is a multiple of 2

If the sum of the digits make a number divisible by 3, the number is a multiple of 3

If the number ends in 5 or 0, the number is a multiple of 5

If the number is divisible by 2 and 3, the number is a multiple of 6

If the sum of the digits make a number divisible by 9, the number is a multiple of 9

### Write a program in c language to enter any five digit number and to print the middle digit?

#include <stdio.h> int main(void){ // Local Declerations int intNum; int midDigit; // Statements printf("Enter a 5 digit integral number: "); scanf("%d", &intNum); //the assignment expression below is used to calculate the mid digit oneDigit = (intNum % 1000) / 100; printf("\nThe middle digit is: %d", oneDigit); return 0; }

### What are some 5-digit numbers that are divisible by 4 and 9?

Any multiple of 36 will do. Multiply 36 by different numbers, until you get a 5-digit number. Any multiple of 36 will do. Multiply 36 by different numbers, until you get a 5-digit number. Any multiple of 36 will do. Multiply 36 by different numbers, until you get a 5-digit number. Any multiple of 36 will do. Multiply 36 by different numbers, until you get a 5-digit number.

### Is 204 a multiple of 2?

Try to do the division! In this case, 204 / 2. If you get a whole number, and no decimals, then it is a multiple, otherwise it isn't. In the particular case of divisibility (being a multiple of) the number 2, you can also just look at the last digit. If the last digit of 204 is a multiple of 2, then the whole number is also a multiple of 2.

### Is 76 prime?

Any even number (except 2) is NOT prime - it is divisible by 2. An even number is (by definition) a multiple of 2; but it can quickly be recognized by the last digit. If the last digit is 0, 2, 4, 6, or 8, the number is even. Any even number (except 2) is NOT prime - it is divisible by 2. An even number is (by definition) a multiple of 2; but it…

### How can you tell that 189 is divisible by 3 without doing the division?

Add up the digits in a number, and if that sum is a multiple of 3, then the original number is also a multiple of 3. So 1 + 8 + 9 = 18, which if you're still not sure then 1+8=9, which is a multiple of 3. You can repetitively sum the digits until you have a result of a single digit number. If the single digit result is 3,6 or 9, then the…