Digits are from 1 to 9
the sum of the 9 greatest digits is = 9+9+9+9+9+9+9+9+9 = 81
the sum of the 9 lowest digits is = 1+1+1+1+1+1+1+1+1+1= 9
and so :
81 + 9 = 90
The sum of the digits on a digital clock is the greatest when the time is 9:59. At this time, the sum of the digits is 9 + 5 + 9 = 23. This is the highest possible sum because the maximum value for each digit on a digital clock is 9.
-9
It is: 999 => 9+9+9 = 27 => 2+7 => 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 sum of the digits is a multiple of 9
A number is divisible by 9 if the sum of its digits is divisible by 9. Thus, the number 99999 is divisible by 9 (the sum of its digits is 45, and it is clearly 11111 * 9), and because 99999 is the largest 5 digit number, it must be the largest 5 digit multiple of 9. 99999 is the greatest no divisible by 9.if u divide it u`ll get 11111.
No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
The sum of the digits in 252 is 2 + 5 + 2 which equals 9.
10 9+9+1 = 19 1+9=10
The rule to decide if a number is divisible by 9 is to look at the sum of the digits. If the sum of the digits is divisible by 9, then so is the number.
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.)
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