Given a two digit number --> xy
The numerical value of that number is 10x + y (The x is in the ten's place and the y is in the one's place.)
So, if you subtract each digit from the original number, here is the resut:
10x + y - x - y = 9 x
Based on that simple algebra, the answer will always be nine times the first digit. People often tend to amaze others by making a seemingly random chart of numbers and prizes. THey claim to guess the prize that the person gets based on his number. The real trick is that All multiples of 9 are matched up with the same prize!
-7.800000000000001
1349
2.3
Just compare the digits one by one: compare the first digit after the decimal point with the first digit of the other number, the second digit with the second digit, etc., until you find a digit that is different.
Choose any number for the first number. Subtract 10 minus the number you chose to get the second number.
-7.800000000000001
Not necessarily. Consider 444. The digits are not different. The first and second digits are not multiples of 3 The first digit is not greater than the second digit. In spite of all that, 444 is a 3-digit number
1349
208
you take the last digit in the first one and add/subtract it to the last digit in the second one and that is your answer
182
89
Multiply the three-digit number by the one's digit, or last digit, of the two-digit number. That is your first part. Now multiply by the second-to-last digit, or ten's digit, and multiply the result by 10. That is your second part. Add the two parts and that is your answer.
4284
27
If you mean digit, the answer is NO.
1346