40 is divisible by 5 and 10, but not by 9 because 40 is a multiple of 5 and 10 but not of 9.
No
Multiples of 9 and 6 are also divisible by three, the reverse is not true. 15 is divisible by 3, but not 6 or 9. 27 is divisible by 3 and 9, but not 6. 12 is divisible by 3 and 6, but not 9. 54 is divisible by 3, 6 and 9.
Using the tests for divisibility:Divisible by 3:Add the digits and if the sum is divisible by 3, so is the original number: 6 + 8 + 4 = 18 which is divisible by 3, so 684 is divisible by 3Divisible by 6:Number is divisible by 2 and 3: Divisible by 2:If the number is even (last digit divisible by 2), then the whole number is divisible by 2. 684 is even so 684 is divisible by 2.Divisible by 3:Already shown above to be divisible by 3. 684 is divisible by both 2 & 3 so 684 is divisible by 6Divisible by 9:Add the digits and if the sum is divisible by 9, so is the original number: 6 + 8 + 4 = 18 which is divisible by 9, so 684 is divisible by 9Thus 684 is divisible by all 3, 6 & 9.
5 is not divisible by 1260. 1260 is divisible by 5 because 1260 is a multiple of 5.
No it isn't
Because 9 is a multiple of 3.
Three is a factor of nine.
yes it is
450 is divisible by 5, 9 and 10 because 450 is a multiple of 5, 9 and 10.
40 is divisible by 5 and 10, but not by 9 because 40 is a multiple of 5 and 10 but not of 9.
No. To find whether the number is divisible by 3, you add each digits and if it's equal to 9 then it's divisible by 3 because 9 is divisible by 3. 9 + 8 + 2 = 19, 1 + 9 = 10... so it's not divisible by 3.
No, because nine does not go into 34 evenly.
The simplest way is to divide 748 by 4 and show that there is no remainder. That proves it. A longer, but more general proof is as follows: 25*4 = 100 so 100 is dividsible by 4. By the distributive property, you can show that any number of hundreds (eg 700) is divisible by 4. So, to prove that 748 is divisible by 4, it is only necessary to show that the number formed by the last two digits (48) is divisible by 4. This is easy, since 12*4 = 48. The second method is not much of an advantage with a number like 748, but it would be if you were asked to prove that 75612349248 was divisible by 4!
9 hours 21 minutes 748 / 80 = 9.35 so 9 hours and 0.35 of an hour then 0.35 x 60 = 21
NO. 1110 is not divisible by 9. A number is divisible by 9 if the sum of its digits is divisible by 9. 1110 = 1 + 1 + 1 + 0 = 3 (3 is not divisible by 9, thus, 1110 is not divisible by 9.)
187 is divisible by 17 and 11. 187 divided by 17=11.