It doesn't always. It's true only if the 4-digit numbers are mirror images of each other.
There is no one-digit number that is equal to both 14 and 28.
No, a multiple of 6 cannot have a ones digit equal to 3. The ones digit of a multiple of 6 will always be even, either 0, 2, 4, 6, or 8, because 6 is divisible by 2.
The factors of 35 are 1, 5, 7, 35. All of them are odd. 7 and 35 are multiples of 7. 5 has a digit sum equal to 5. No number satisfies all of the conditions.
No. Four can not be multiplied by another whole number and equal ten.
1
There is no one-digit number that is equal to both 14 and 28.
Yes. 12 * 9 = 108. 108 is a number made up from 3 digits.
No, a multiple of 6 cannot have a ones digit equal to 3. The ones digit of a multiple of 6 will always be even, either 0, 2, 4, 6, or 8, because 6 is divisible by 2.
The factors of 35 are 1, 5, 7, 35. All of them are odd. 7 and 35 are multiples of 7. 5 has a digit sum equal to 5. No number satisfies all of the conditions.
No. Four can not be multiplied by another whole number and equal ten.
1
24
198 is the greatest three-digit even number that has no factor equal to 4.
As an 8 digit binary number it is equal to 166.
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.
89
No 5 digit number can equal 12 and so there can be no answer to the question.