Your are 28 or 64
Both 10 and 20 are two-digit numbers that are factors of 20.
Weak Arm numbers are numbers like 153, where: 153 = 11 + 52 + 33; i.e. the number is the sum of the digits to the power 'n' of a number, where 'n' is the power of the place value of the digit of the number plus one.
Common three-digit multiples of 27 and 11 are 297, 594 and 891. None of their digits add up to 10.
There is no number, no matter the number of digits, that is only divisible by 2.
Even.
14 is a factor of 532.
36
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
In the numbers 1-9 each number has 1 digit and there are 9 of them, so that's 9.In 10-99 each number has 2 digits, and there are 90 of them: 2x90 = 180There are 900 three digit numbers [100 through 999]: 2700 digits.There are 9000 four digit numbers: 36000 digits.90,000 numbers with five digits: 450,000 digits.900,000 numbers with six digits: 5,400,000 digits.Then 1 number with seven digits: 7 digits.Add them up and you have 5,888,896 digits.
Any number that has 4 or 5 digits. A digit in a number is one number place. 1 has 1 digit, 11 has 2 digits, 111 has 3 digits, and so on.
No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
2
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
Digits is how many numbers you have in a number. If you have the number 4 it has one digit if you have the number 20 it has two digits and if you have the number 558 it has three digits. So basically in the number 1085 it has 4 digits because there is 4 numbers in it, the numbers are 1,0,8 and 5. Hoped you understand.
65
150