1
11^11
None of the ones that are visible can be written as a whole number.
If we use numbers that can be written with only ones and zeros, then we're working with binary numbers. The largest binary number that can be written with seven bits is "127". When you remember to include 'zero', that makes a total of 128 different numbers. The sum of the (smallest + largest) is (0 + 127) = 127 The sum of the (second smallest + second largest) = (1 + 126) = 127 The sum of the (third smallest + third largest) = (2 + 125) = 127 Each sum built in this way is 127, and there are (half of 128) = 64 of them. So the sum of all 128 numbers is (64 times 127) = 8,128
Starting with the largest number when adding numbers is merely a matter of convenience. You can start with any number, but with many methods of addition it is a bit easier to start with a large number and add smaller ones .
ones
To form the largest even number, the last digit must be even, which means it can be either 8, 4, or 2. Placing the largest even digit, 8, in the ones place, we can continue selecting the next largest digits in descending order until all digits are used.
11^11
eleven to the power of eleven
3 and and any number with the ones digit that is odd The smallest odd number is ' 1 '. There's no such thing as the 'largest' one. Whatever odd number you name, no matter how large it is, all I have to do is add 2 to your number, and I can always come up with a larger odd number.
138
The written number for 3 hundreds, 8 tens, and 18 ones is 318. This is calculated by combining the hundreds (300), tens (80), and ones (18) together. Therefore, 300 + 80 + 18 equals 318.
2 is one number whose multiples include the ones given. It is not the only one, nor the largest.