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4 is a factor of 28. 4 is a divisor of 28. 7 is a factor of 28. 7 is a divisor of 28. 28 is a multiple of 7. 28 is a multiple of 4. 28 is a product of 4 and 7. 28 is divisible by 4. 28 is divisible by 7.
28 is the LCM of 4 and 7 , the smallest number divisible by both.
The first multiple of 7 is 7.The 28th multiple of 7 is 196.So there are 28 of them.
Oh, dude, you're looking for numbers that are divisible by both 4 and 7? Well, when those two get together and have a party, their love child numbers are like 28, 56, 84, and so on. It's like a cool math club where only the multiples of 4 and 7 are allowed to hang out.
If the number is even, it's divisible by 2. If the sum of the digits is a multiple of 3, the whole number is divisible by 3. If the last two digits are a multiple of 4, the whole number is divisible by 4. If the last digit is a 0 or a 5, the whole number is divisible by 5. If the number is even and divisible by 3, it's divisible by 6. If the last digit doubled subtracted from the rest is a multiple of 7, the whole number is divisible by 7. If the last three digits are a multiple of 8, the whole number is divisible by 8. If the sum of the digits is a multiple of 9, the whole number is divisible by 9. If the number ends in 0, it's divisible by 10.
84! You can go through all the even multiples of 7 until you get to one with the digits adding up to 12. You first get 84. 84 is divisible by 4 and because it is divisible by 2 and 3 it is divisible by 6.
No. 4 is even, all multiples of 4 are even, but 207 is odd so it cannot be a multiple of 4. Alternatively, the test for 4: add twice the tens digit to the units digit; if this sum is divisible by 4, so is the original number. 2 x 0 + 7 = 7; 7 is not divisible by 4, so 207 is not divisible by 4.
The smallest multiply of 7 divisible by 9 is the lowest common multiple of 7 and 9: lcm(7, 9) = 63.
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Add together the digits of the number to be divided by 3. If the sum is 3 or a multiple of 3 then the number is divisible by 3. Example : 5681 ; 5 + 6 + 8 + 1 = 20 which is not a multiple of 3 so 5681 is NOT divisible by 3. 477 ; 4 + 7 + 7 = 18 which is a multiple of 3 so 477 is divisible by 3. NOTE : When adding the digits, the digits of the total can be summed to determine if the original number is divisible by 3. In the example 4 + 7 + 7 = 18 then 1 + 8 = 9, and 9 is a multiple of 3 so confirming that 477 is divisible by 3.
. . . it is a multiple of seven.