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18. 1+8=9 9x2=18

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Q: What number is twice the sum of its digits?
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Related questions

What is the only number whose value is twice the sum of its digits?

18


What two digit number is twice the sum of its digits?

18 is the only number that matches these criteria.


Is 18 the only number that is twice the sum of its digits?

Yes, unless you include 0.


What are some What are facts about the number 18?

18 is the only number (other than 0) that is twice the sum of its digits.


The sum of the digits of the number is 6?

the sum of my digits is 6? answer=60


What is the smallest number you can add to 456 to get a sum that uses the digits 4?

0.Because 456 + 0 = 456. and the digit 4 is used twice in the sum.


The units digit of a two digit number exceeds twice the tens digit by 1 what numbers if the sum of its digit is 10?

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.


How do you find the sum of digits of each number?

Add the digits together. The sum of the digits of 23 is 5.


There is a number that is 5 times the sum of its digits What is this number?

The number is 45. The sum of its digits i.e. 4+5=9 Five times the sum of its digits i.e. 5 times 9 which is 45


How many one-digit numbers are twice the size the sum of their digits?

None. The sum of one digit can't be twice the size of the digit.


What is the smallest whole number that is equal to twice the sum of its digits?

18 1 + 8 = 9 and 9 x 2 = 18


The sum of the digit of a 2 digit number is 11 when the digits are reversed the new number is increased by 20 which is twice the original number find the number?

47 Impossible problem!