One possibility is 11111222223333344444
The number 1111115
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
Start with the smallest multiple of 13 and continue with the next smallest until finding one that fits the specifications. 13, sum of digits is 1 + 3 = 4 which is not prime 26, sum of digits is 2 + 6 = 8 which is not prime 39, sum of digits is 3 + 9 = 12 which is not prime 52, sum of digits is 5 + 2 = 7 which is prime So, 52 is the smallest positive multiple of 13 for which the sum of its digits is prime.
To determine if 552 is a multiple of 9, you can use the rule of divisibility for 9, which states that a number is a multiple of 9 if the sum of its digits is divisible by 9. The digits of 552 are 5, 5, and 2, which sum to 12 (5 + 5 + 2 = 12). Since 12 is not divisible by 9, 552 is not a multiple of 9.
Yes. The sum of the digits of 153 is 1 + 5 + 3 = 9, a multiple of 9.
The number 1111115
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
Start with the smallest multiple of 13 and continue with the next smallest until finding one that fits the specifications. 13, sum of digits is 1 + 3 = 4 which is not prime 26, sum of digits is 2 + 6 = 8 which is not prime 39, sum of digits is 3 + 9 = 12 which is not prime 52, sum of digits is 5 + 2 = 7 which is prime So, 52 is the smallest positive multiple of 13 for which the sum of its digits is prime.
To determine if 552 is a multiple of 9, you can use the rule of divisibility for 9, which states that a number is a multiple of 9 if the sum of its digits is divisible by 9. The digits of 552 are 5, 5, and 2, which sum to 12 (5 + 5 + 2 = 12). Since 12 is not divisible by 9, 552 is not a multiple of 9.
41
Yes. The sum of the digits of 153 is 1 + 5 + 3 = 9, a multiple of 9.
45
To determine if 522 is a multiple of 9, you can use the rule that a number is a multiple of 9 if the sum of its digits is a multiple of 9. The digits of 522 are 5, 2, and 2, which sum to 9. Since 9 is a multiple of 9, it follows that 522 is also a multiple of 9.
The sum of the digits is a multiple of 3
The sum of the digits is a multiple of 9
The sum of the digits is also a multiple of 9. And, if the sum of the digits is too large, you can sum those digits and keep going.
the only multiples of 5 are 30.35.40.45.50, and 55 the only sum to 9 is 45