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The largest four digit whole number that is a multiple of 7 is 9,996.Find the largest four digit number : 9999Divide 9999 by 7Round the answer down to the nearest whole numberMultiply the answer from #3 by 7
42 is the lowest common multiple of 3, 6, and 7.
105 is a multiple of 7
Anything three-digit would have to be a multiple, like 280.
No two digit prime number exists that is a multiple of 7. All two digit numbers that are multiples of 7 are compositenumbers.
The largest four digit whole number that is a multiple of 7 is 9,996.Find the largest four digit number : 9999Divide 9999 by 7Round the answer down to the nearest whole numberMultiply the answer from #3 by 7
875 is one such number.
42 is the lowest common multiple of 3, 6, and 7.
105 is a multiple of 7
Anything three-digit would have to be a multiple, like 280.
No two digit prime number exists that is a multiple of 7. All two digit numbers that are multiples of 7 are compositenumbers.
738
The smallest 3-digit multiple of 7 is 105 = 15*7 The largest 3-digit multiple of 7 is 994 = 142*7 So there are 142-14 = 128 3-digit multiples of 7, ie 128 3-digit numbers that are divisible by 7.
If the 2 digit number is a multiple of both 5 and 7 then it is a multiple of (5 x 7) which equals 35. The only even 2 digit number which is a multiple of 35 is, 2 x 35 = 70
The smallest three digit multiple of 15 is 105, which is 15 x 7.
A two-digit number that is a multiple of 3 and 7 and 1 less than a multiple of 5 is 84, because 84/7=12 and 84/3=28 and 84 is 1 less than 85, and 85 is a multiple of 5 so the answer is 84
I'm not sure what would be a trick for the number 3. I will presume you would mean the way to tell if a number is a multiple of 3. A number is a multiple of 3 if the sum of its digits is also a multiple of 3. For example 585 is a multiple of 3 since' 5+8+5 = 18 which is a multiple of 3. The number 47 is not a multiple of 3 because 4+7 equals 11 and that is not a multiple of 3. There is a second digit that has a similar rule for multiplicity. That digit is 9, which just happens to equal 32 . In fact, since 18 is a multiple of 9, 585 must be a multiple of 9 also.