693
693 / 3 = 231
693 / 7 = 99
693 / 9 = 77
693 / 11 = 63
No, the number 1155 is divisible by four prime numbers (3, 5, 7, 11).
Yes. It equals 45. A quick rule for numbers to see if they are divisible by 3 is to add all the numbers, for example: 207 = 2 + 0 + 7 = 9 Is 9 divisible by 3...Yes! It helps reduce the large numbers, for an easier answer. The number 8649... 8 + 6 + 4 + 9 = 27 and 27 is divisible by 3, so 8649 is also divisible by 3. BUT...137: 1 + 3 + 7 = 11 11 is not divisible by 3...so, 137 is not divisible by 3.
Yes. 1155 = 3 * 5 * 7 * 11
How many numbers from 11 to 50 are there which are exactly divisible by 7 but not by 3? Five Four Six Two * * * * * Good strategy! List all possible values and one of them must be correct! The correct answer is 4.
An infinite amount of numbers but the lowest common multiple of 11 and 7 is 77
No, the number 1155 is divisible by four prime numbers (3, 5, 7, 11).
Yes. It equals 45. A quick rule for numbers to see if they are divisible by 3 is to add all the numbers, for example: 207 = 2 + 0 + 7 = 9 Is 9 divisible by 3...Yes! It helps reduce the large numbers, for an easier answer. The number 8649... 8 + 6 + 4 + 9 = 27 and 27 is divisible by 3, so 8649 is also divisible by 3. BUT...137: 1 + 3 + 7 = 11 11 is not divisible by 3...so, 137 is not divisible by 3.
Yes. 1155 = 3 * 5 * 7 * 11
no, what about 5, 7, 11, 13 etc
They are prime numbers, divisible only by one and themselves.
NO. Odd numbers are not always divisible by 5. Examples: 3 , 7, 9, 11, 13, 17, ... are odd numbers and they are not divisible by 5.
How many numbers from 11 to 50 are there which are exactly divisible by 7 but not by 3? Five Four Six Two * * * * * Good strategy! List all possible values and one of them must be correct! The correct answer is 4.
An infinite amount of numbers but the lowest common multiple of 11 and 7 is 77
A number is divisible by 7 if it is a multiple of 7, so to figure it out, start listing multiples of 7. 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, ... On this list there are 11 numbers that are between 11 and 90. The answer is 11 numbers between 11 and 90 are divisible by 7.
2 + 3 + 1 = 6, which is divisible by 3, so 231 is divisible by 3. Divide to get 231 = 77 Hard to miss that this is divisible by 7, so we get 231 = 3*7*11
5, 7, a bunch of numbers that are odd are not divisible by 3. numbers that are divisible by three can have all their numbers added together and come out with a number that is divisible by 3.
Oh, what a lovely question! Let's see, we can find the numbers divisible by 3 first, which are 33 numbers, and the numbers divisible by 7, which are 14 numbers. But wait, some numbers are divisible by both 3 and 7, so we must be careful not to count them twice. In the end, there are 47 numbers between 1 and 100 that are divisible by 3 or 7. Happy counting!