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What is the smallest 4 digit number whose digits add up to 18?
22
'the smallest six digit number whose digits are all odd?
111111 Any 6 digit number less than that would require a 0, which is an even number.
What is the four digit number whose digits are reversed when multiplied by nine?
Find a four digit number whose digits will be reversed when multiplied by nine?
What is 1414?
1414 is apparently both a triangular number and the smallest triangular number with four digits. It is also the Decimal expansion of sqrt(2) truncated and rounded to 4 places. There are many other mathematically esoteric aspects of 1414 if you care to check them out. 1414 is the smallest number whose square contains 3 consecutive 9's.1414 is the smallest number whose square contains 3 consecutive 9's. from http://www.celsius1414.com/mathematics
What is the smallest number whose factors are 3 11 and 5?
165
What is the smallest two-digits prime number whose digits are also prime themselves?
23
I am Smallest prime number whose digits add to 8 what am i?
17
What is the smallest six - digit number whose digits are all odd?
111111
What is the prime number that its digits adds up to the smallest prime number?
The smallest prime number, of course, is 2. The smallest prime number whose digits add up to 2 is, of course, 2. The next-smallest is 11. It is left as an exercise for the reader to determine whether the other numbers whose digits add up to 2 (e.g. 101, 1001, 10001) are prime.
What is the smallest two digit prime number whose digits themselves are prime?
The smallest two-digit prime number whose digits themselves are prime is 23. Both 2 and 3 are prime numbers, and together they form the prime number 23.
What is the smallest prime number whose sum of its digits forms a number that is a perfect cube?
I think it will be 17. The sum of digits is 8, which is the cube of 2.
Smallest 4-digit number whose digits sum up to 15?
-11
What is the smallest 4 digit number whose digits add up to 18?
22
What is the smallest whole number that is a multiple of 18 and whose digits can only be 4 or 7?
774774774774
What is the smallest six digit number whose digits are all odd without any digit repeated?
none
What is the largest and smallest of two-digit prime numbers whose digits are also prime digits themseleves?
Smallest is 11 & Largest is 77.
How many 3 digits whole numbers whose sum is 3?
There are no 3-digit whole numbers whose digits sum to 3. The smallest 3-digit number is 100, and the largest is 999, but in neither case is the sum of the digits equal to 3.
