There are twelve instances where the integers from 1 to 200 contain the digit 1 at least twice:-
11,101,110,111,121,131,141,151,161,171,181,191.
4
50
None. The sum of one digit can't be twice the size of the digit.
216.
A proper 2-digit number (which must be smaller than 100) cannot be twice a 10-digit number (which must be larger than 999,999,999).
4
Greatest: 989949 Least: 100000
It is prime. When multiplied by the integers 1 to 9, the value is simply that digit twice.
Oh, what a happy little question! The greatest 6-digit number where the digit in the thousands place is twice the digit in the tens place is 986,432. And the smallest 6-digit number following the same rule is 164,823. Isn't it wonderful how numbers can dance together in such a harmonious way?
They are both evenThey each have 2 digitsFor both numbers the second digit is twice the first digitThey are both positive integers
50
None. The sum of one digit can't be twice the size of the digit.
The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
216.
5 and 10
A proper 2-digit number (which must be smaller than 100) cannot be twice a 10-digit number (which must be larger than 999,999,999).
102, 010 2 in the thousands place is twice 1 in the tens place,